As an honest person, that makes sense. Unfortunately, the world is filled with people who are not. If I have to give my money to Alice to give it to Bob because Alice is the only person with a way to get it to Bob, I'm trusting Alice to just do that. But Alice is a business woman and is doing this for lots of people. One day, Alice just disappears with everybody's money. All of the people that relied on Alice to get money to Bob just got screwed. So then they make a bunch of rules and regulations so that doesn't happen again.

MTLs, money transmission licenses exist to say you can’t legally handle other people’s money without proving you’re trustworthy, solvent, and compliant with anti-crime laws.

Who's permission do you need to be allowed to accept $10 in cash? I mean there are regulations but that is usually not related directly to the cash payment itself but rather that you know you might need to pay taxes or there is regulation that you can't commit terrorist acts and you know that could be the blocker but then it's not really the cash payment that is needing permission. And again, nothing that Bitcoin or other crypto is solving because you still would have to have the same kind of permission or just not care about the permission but you can do that with cash too.

You still can - make a wire transfer or give them cash. Or what is your actual problem?