The key difference is that they all require identity to use and can be traced back to a person.
replyCash requires no such thing. Neither do easily available gift cards. There is a little more friction involved.
replyAs a merchant I have zero desire to sell online to an anonymous buyer because the fraud risk is too high. I have to know whom I’m shipping to and how they’re paying for it.
That is by design and is a good thing to everyone except cartels and communist governments.
replyWhat about people wanting to buy abortion pills?
replyCash, at a pharmacy.
replyCrypto doesn’t make that any better.
Neither does online ordering. Online orders have to have a degree of KYC.