Stablecoins are a huge business but the core use is money laundering, illegal transactions and facilitating crypto speculation. I don't think $2 coffees bought with stablecoins are ever going to be much of a thing.

Even excluding illegal stuff it's a great business though. USDC have issued $60bn worth and they get to invest that and keep all the interest.

And Tether have $144bn although they are sketchier and may end up in jail one day. There's quite an entertaining 2021 article on Tether https://www.bloomberg.com/news/features/2021-10-07/crypto-my...