Been party to more than a couple situations with large banks who decided that you violated some hidden AML related policy and with zero recourse. You are lucky to even get your money out of those accounts without lengthy litigation.
Might happen more with fintech, but traditional banking does not remotely make you immune to this. Start doing anything interesting not “normal” and you’ll find out the hard way.
A lot of banks are now fintechs - no branches, everything in an app, with a website if you are lucky. The rest would like to be like them to cut costs.
Wise is straightforward in the UK, where it is regulated by the same regulator as banks but subject to different rules (the big difference being customer fund ringfencing rather than a deposit guarantee). It varies in other countries but is locally regulated in a good many.
Reputable financial businesses follow regulations in countries in which they do not operate (e.g. by not opening accounts in countries where they are not authorised).