If they don’t already, they will. The insatiable desire for profit means that even if you paid them $1000 a month for their dogshit rag, they’d sell your data to make $1001 dollars.
Regulations are the only answer and they have to be both enforced and punished heavily enough to not make it worth risking.
I think more broadly, it happens whenever there is the mentality of “more X, no matter what”. Usually that’s profit, but I don’t think it’s mandatory.