> So you end up with a system that most people won't touch, and only appeals to users who need to make shady transactions.
It can also appeal to applications where payers and payees have some sort of social capital at stake. Patreon is the perfect example for that. If Patreon could offer the possibility of making payments via crypto with reduced fees, don't you think that people would do it?
It also can appeal for the use cases where the value of the transaction is too low for payers to worry about the "insurance" provided by the credit card networks, but that merchants need to be protected. E.g, selling digital goods online. Imagine you want to sell a book online and charge $2. With crypto would be easy. With a credit card, not so much.
Finally, it also would make sense for transactions where people would rather risk losing the money over their privacy. E.g, if Ashley Madison had a crypto option, how many of its users would use it just to be sure that their names would never end up on a list?
So you end up with a system that most people won't touch, and only appeals to users who need to make shady transactions.
In which case they may just as well leave out the middle merchant and exchange crypto directly.