What limit are we talking about though? Credit or debit?

Debit I'd agree would suck because it is your money. Credit cards on the kther hand is you lending mkney from the bank.

Because you put your money there and agreed to their rules.

It typically doesn't, it just implements compliance with laws and regulations in your jurisdiction.

Withdrawal and transaction limits are commonly such a thing, politicians get hounded because some people were frauded out of their monies and they feel a need to show that they're doing something about it.

Banking is very international, you can put your money in some other jurisdiction if you'd like to. Many transnational banks are connected to the usual payment providers, you can probably figure something out if you put your mind to it. One way to do it is to start a company, business accounts at banks generally have different limits and then you pay a lawyer or bean counter to clear how to do the books and pay appropriate taxes.