Owens notes that automated surveillance pricing creates massive discrepancies, charging different consumers up to 23 percent more for identical items at the exact same moment. This opacity prevents consumers from comparison shopping effectively and undermines their ability to budget predictably.

Digital platforms can algorithmically change rules, prices, and recommendations on a per-user, per-session basis, a practice called "twiddling." This leverages surveillance data to maximize extraction, such as raising prices on payday or offering lower wages to workers with high credit card debt, which was previously too labor-intensive for businesses to implement.

For restaurants, historically a cash-based business with anonymous customers, the primary purpose of a loyalty program isn't discounts. It's a data acquisition tool that converts 'unknown diners' into known customers, providing actionable data on visit frequency and purchase behavior.

To turn anonymous in-store shoppers into known contacts, a compelling value exchange is essential. Offering a free sample in return for a loyalty card scan provides a low-friction incentive for customers to willingly connect their physical presence to their digital identity, fueling first-party data strategies.

While competitors invest heavily in loyalty programs and analytics to personalize offers, Trader Joe's collects no individual customer data. This is a strategic choice to simplify operations, reduce overhead, and build trust by offering a consistently good experience to all shoppers, rather than a fragmented one.

Brands often misinterpret repeat purchases driven by discounts or points as genuine loyalty. True loyalty is an emotional connection, not a transactional one. This "entrapment" model fails to build lasting customer relationships or brand affinity.

Loyalty isn't just about rewarding existing customers. A key, sophisticated metric is its ability to convert "category heavy splitters"—customers who shop across multiple brands in a category—by offering a superior, personalized experience that shifts their spending.

Brands like Uber and JetBlue are tracking user data—such as the type of credit card used or browsing history—to secretly charge wealthier or less price-sensitive customers more for the same service.

The erosion of third-party cookies and rising privacy laws have forced a fundamental shift. Loyalty programs are no longer just a marketing tactic; they are now the central, consent-based engine for gathering and activating the first-party data essential for the entire customer experience.