Only tangentially related, but try getting a UK or US bank account as a gambling company. Doable, yes. Easy, no. Low-effort, not a chance. And you still risk getting kicked out for no reason at all.

Banks are terrified of gambling companies: they are one of the very few businesses where it is perfectly normal for a notable fraction of downstream customers to withdraw more money than they put in. Without ever having delivered any goods or billable services(!)

Is it any wonder online gambling has been such a magnet for money laundering?

There are plenty of legal businesses that banks and payment processors refuse to do business with. Take a look at the long lists of businesses Stripe won't process payments for[1].

[1] https://stripe.com/restricted-businesses