Engagement is not a neutral metric.
When a company optimizes for watch time, return frequency, and social distribution, product behavior shifts. Interfaces become louder. Defaults become more public. Data starts flowing toward centralized systems because that is where engagement can be measured, monetized, and refined.
Ownership creates a different operating discipline.
If the memories belong to the user in a practical, technical sense, then the system has to support local storage, private exports, key custody, and continuity planning. Those decisions are more demanding than growth hacks, but they produce a stronger product because they align the architecture with the actual value at stake.
This is a strategic choice, not just a moral one.
The long-term moat for Legocia is not a single device feature. It is trust. Trust grows when the product keeps choosing the person over the platform, especially in the less visible parts of the stack.