Wise's unsupported business list is two pages long
https://wise.com/us/acceptable-use-policyand the transaction size limits is also too low, for me (I think you can send multiple in quick succession though)
to avoid random fintech platform and bank scrutiny for normal transactions and the higher scrutiny given to international transfers, I've used crypto for over a decade. For investment, to pay or be paid by vendors in other countries. Places where paypal/wise/revolute/n26 will flag, hold, or western union was the only option. This hasn't changed in that decade, only more onramps and offramps for crypto has changed for more proliferation.
once our crypto is within our respective domestic jurisdictions, cashing out typically has an extremely fast, non-scrutinized option, similar in speed to Pix
another comment mentioned that the Bank of International Settlements is working on instant cross border transactions, I suspect the scrutiny and transaction size limits will remain inferior to the unlimited size that crypto provides, and lack of scrutiny that a transaction converted to a domestic transaction will provide.
Been using stablecoins for a decade and the transaction costs have dropped as blockspace has become more abundant, and the stablecoin issuers create and redeem for free.
there is also the benefit of not needing the domestic currency or banking rails, since the crypto ecosystem has many investment options for different risk profiles, and many vendors to pay for goods and services.
It is very common that people do not find this competitive because they aren't aware they have a problem, or don't have a problem. But many people do encounter a friction once they branch out into another industry to try to change their circumstances, or earn larger amounts. That attracts enough people to crypto.