IME companies change privacy policy seemingly on a whim, and present current users with an interstitial next time they try and log in, gating the immediate grat

IME companies change privacy policy seemingly on a whim, and present current users with an interstitial next time they try and log in, gating the immediate gratification of use of the service with a big green OK button, virtually guaranteeing acceptance. It would be much harder for Stripe to do that transitively, though, and presumably the vendors, i.e. Stripe's customers, can't grant this on users' behalf.