Einstein-inspired visual showing how engagement and loyalty generate exponential business energy.
Georg Christopher Schweiger

Georg Christopher Schweiger

Managing Director | Oct 21, 2025

The Relativity of Loyalty: Driving ROI Through Engagement

Just over a century ago, Albert Einstein published his theory of special relativity, proving through his famous equation E = mc² that mass is a concentrated form of energy. The two are interchangeable — even a tiny amount of mass can release enormous energy.

What if that same principle applied to customer loyalty? What if loyalty itself contained energy — a force that, when activated, generates exponential business results?

In other words, the cost of a loyalty program should have the potential to create vastly greater profits from deeper customer engagement. 

At Perx, we like to think of the ROI of customer loyalty programs and engagement as a new equation for modern brands:
Engagement = Motivation × Customer Loyalty².

Let’s unpack that.

Motivation: The Hidden Force That Moves Mountains

Motivated customers are the cornerstone of any successful customer loyalty program. They’re driven not just by tangible rewards – like cashback, discounts, or exclusive access – but by experiences that make them feel connected to your brand.

Tiered programs, gamified interactions, and personalized campaigns all nurture this emotional connection. Even small improvements to how you motivate your customers can spark major results.

As Einstein might say: “Motivation moves mountains; minor program changes make major monetary gains.”

In business terms, this is what we call Return on Investment (ROI) — and loyalty, when engineered intelligently, has one of the highest ROIs in marketing.

Small Changes, Big Loyalty Gains

Tiny shifts in design and experience often deliver the biggest loyalty dividends. Examples include:

  • Frictionless onboarding: Simplify registration and reward redemption.
  • Meaningful rewards: Align incentives with customer interests.
  • Aspirational goals: Create milestones that give people a reason to strive for more.
  • Memorable experiences: Combine transactional perks with emotional moments that stick.

Deeper brand connections go beyond simple transactions by adding personal touches and an emotional element to the program, creating lasting memories. Surprisingly, many loyalty programs still make customers work hard for their rewards – confusing interfaces, manual steps, or clunky apps. Friction kills engagement; simplicity fuels loyalty.

Factoring in Customer Engagement and Loyalty

Together with motivation comes loyalty, or as Albert Einstein put it, Engagements (E) make motivation (m) and customer (c) loyalty(2) interchangeable forms of the same thing. 

However, what is loyalty?

In the world of customer engagement, loyalty is an ongoing emotional connection that drives repeat behavior, advocacy, and trust. It’s not points – it’s participation.

When loyalty is squared – in other words, when both rational (value) and emotional (connection) dimensions are active – it creates compounding energy across the customer lifecycle:

  • Advocacy: Customers champion the brand publicly.

  • Community: Loyalty becomes social currency.

  • Efficiency: Retaining customers costs far less than acquiring new ones.

  • Data & insight: Every interaction reveals behavioral patterns for smarter engagement.

That’s why modern loyalty isn’t just a marketing expense – it’s a growth engine.

As pointed out above, commercial enterprises largely focus on the efficiency of loyalty programs; in other words, they measure the financial success of a program by comparing the incremental profits generated from loyalty program members against the total costs of running the program. 

However, in reality, the challenges start from the word go as the initial RoI has and can have many different meanings beyond expressing return on investment in percentage or dollar terms. They not only depend on the factors to be considered (just to name a few below) by also on the audience within the organisation. 

ROI factors in customer loyalty programs visual chart

Factoring in the Unknown

When Einstein first introduced relativity, his peers struggled to believe it – until years later, when evidence proved him right. Launching or reinventing a loyalty program often feels the same.

As outlined above, many different Rs need to be brought into correlation with different Is. Only when doing so can the different needs and challenges of an organisation be identified and addressed in terms of engagement, even if the necessary skills and expertise are not immediately available within the organisation.

There is a substantial body of evidence that implementing an effective loyalty program offers clear opportunities to lower costs, grow revenue by up to 20%, and secure a durable competitive advantage. Furthermore, different improvements coming from AI will be able to cater for people want more and more personalized rewards, content, and exclusive experiences. 

Skepticism from finance, IT, or procurement is natural. That’s why change management is as essential as technology.

Here’s what works:

  • Early stakeholder engagement needs to be arranged by actively listening to concerns, aligning the program’s benefits with business goals, and using regular communications and workshops to encourage support at all levels.
  • Structured change management practices need to be adopted, including a shared program vision, a well-defined roadmap, and a clear assignment of roles and responsibilities that needs to be set out, ensuring that each party understands their role and expected contribution.
  • Proven decision frameworks such as RACI or RAPID should be applied to assign clear accountability and authority in the decision-making process, helping to break analysis paralysis and accelerate progress.
  • Maintaining transparency through centralised documentation and accessible metrics, providing a common reference point to facilitate agreement and track outcomes.
  • Setting realistic project milestones, balancing out contributions among different stakeholder groups, and reviewing progress regularly, allowing for agile adjustments in response to feedback or changing conditions.

With the right structure, even the most complex organizations can turn hesitation into high-velocity engagement.

The Three Universal Laws of Loyalty Programs

Every loyalty initiative follows its own physics — but three universal laws always apply:

  • For every customer action, there should be an equal and motivating reward.
  • The effectiveness of a loyalty program increases with personalization squared.
  • The path to loyalty must be friction-free — or engagement will decelerate rapidly.

Let Loyalty Shine

By fostering a culture of collaboration, clarity, and accountability, organizations can overcome internal barriers and realize the full energy of customer loyalty.

Don’t let your loyalty efforts fade into the cosmic background noise. Harness relativity: start small, think big, and let every bit of engagement radiate exponential returns.

Just as mass and energy are interchangeable, so too are engagement and loyalty. As Einstein said, “If you can’t explain it simply, you don’t understand it well enough.”

Likewise, if your loyalty program can’t be explained without a 50-page manual, it won’t keep anyone loyal — except maybe to confusion.

At Perx, we believe loyalty should be simple, human, and measurable. Because when engagement meets motivation, growth becomes a universal constant.

FAQs

Q1: What’s the ROI of a customer loyalty program?
The ROI comes from incremental spend, retention, and advocacy. Perx clients have seen engagement rates rise by up to 70% per user and millions in incremental revenue.
Minor optimizations — like simplifying redemption or adding gamified milestones — can create major behavioral shifts and stronger brand attachment.
AI personalizes rewards, content, and timing, ensuring every customer interaction feels relevant and valuable — turning data into lasting loyalty.

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