This happens already in dating apps. https://www.vice.com/en/article/banned-from-dating-apps/

Date didn't go as well as the other person was hoping? They can report you to the app, some tired and overworked support person in an emerging market bans you, they keep whatever cash you already spent on bonus likes and your multi-month subscription, no refunds.

And you can never sign up from the same Google/Apple account, the same phone, and with the same face, because of course now you have to verify your biometric information with some of these apps (Bumble is introducing submitting your id or taking verification photos).

Or their AI misfires and deems you as having said something inappropriate, again, off you go. You have no recourse, hope you know someone who works at that company who can flip the bit in their database.

Want to know the reason why they banned you? Sorry, that's sensitive information, you will never know, only that you "violated the terms of service". Which one? Sorry, we can't tell you, goodbye.

Oh, now 60% of society meets through datings apps? Too bad, you don't get to anymore, shouldn't have violated our terms of service. Oh, and most of these apps are run by the same company, so you get banned on one, you likely get banned from all on them at once. Have fun.