I am hoping the growth of stablecoins at least starts to compete with the scam payment processing companies. Even if it is the evolution of fiat, I look at them as the gateway drug into crypto. It gives people a baseline because everything else is so incredibly volatile. The only ones I mess with in my non-KYC wallets are USDT and DAI (as far as EVM DEFI goes) then of course there is HBD. I loan USDC against my collateral, send it to a different wallet, then send that to my fiat offramp.
I see USDC being the 'CBDC' for the US as it is highly regulated and tracked. Plus I see commercials about using it as payment all the time on some of my Roku channels and on YouTube, so the word is getting out.
I am also working with a no-code dapp builder group and have been consulting with them on their e-commerce features which is running solely on stablecoins for now. In my opinion and experience, these are what are going to drive actual use case and adoption.