Here people will usually pre-pay a certain # of entries or a certain time period, often with cash, and no one asks for any details except name. Hard-to-cancel recurring membership isn't a thing.
We do not have many gym chains, though.
That said, they exist because it works. There's no way FB could make the money it makes by selling its product to consumers, but it can by snooping, manipulating and advertising. Banking goes in cycles and modes, but it's one ugly after another usually. Maybe they make steady, risk free profits while externalizing long tail risks. Maybe they enjoy a low competition regulated market that lets them fleece captive customers. Etc.
The oldest law codes we have show evidence of bankers being bold, usury and whatnot.
In a lot of the big, egregious examples (FB, Citibank, etc.)... killing the abuse would be turning a $1trn industry into a $1bn industry. It's certainly possible to do social media or consumer banking in a much smaller/cheaper way.
Basically disrupt the abuse of the un-buisness-savy, by providing them a with automated buisness-savyness?