Humm, I am honestly not too sure what you're trying to say here.

We do want competition and innovation so forcing a super-costly banking license on start-ups is a bad idea imo,

Stablecoins have a massive use case though, just look at the growth:
https://stablecoinindex.com/marketcap

It's not an enigma whether they'll be regulated or not, they ARE being regulated right now, see MICA in Europe or STABLE act in the US, and that's just the start...