Not very many. We don't use dark patterns and make it easy for people who want to cancel a subscription, so it's not a problem we have for the most part.
But on the relatively rare occasions that someone has been abusive -- the kind of person who repeatedly tries to sign up under different aliases and get a bit more for free in violation of terms, for example -- we can and sometimes do take action, and we have never lost.
It's a little disturbing that so many people's reaction here is apparently a form of wilful ignorance. You can downvote or make comments about how this has never happened to you or talk to your attorney or whatever if that makes you feel good, but your opinion does not change the legal situation: cancelling a payment method is not generally equivalent to cancelling a legally binding contract, and the advice to rely on doing so could lead to people being the wrong side of a real legal action, paying recovery costs that far exceed the original size of the debt, damaging their credit, etc.
But on the relatively rare occasions that someone has been abusive -- the kind of person who repeatedly tries to sign up under different aliases and get a bit more for free in violation of terms, for example -- we can and sometimes do take action, and we have never lost.
It's a little disturbing that so many people's reaction here is apparently a form of wilful ignorance. You can downvote or make comments about how this has never happened to you or talk to your attorney or whatever if that makes you feel good, but your opinion does not change the legal situation: cancelling a payment method is not generally equivalent to cancelling a legally binding contract, and the advice to rely on doing so could lead to people being the wrong side of a real legal action, paying recovery costs that far exceed the original size of the debt, damaging their credit, etc.