Because it's physically difficult for consumer and business owner.
Verification....breaking it pieces......
Not the case with bitcoin.
That's kinda the whole schtick.
Even onchain.
Discussion
You are right and of course i’m not saying it’s not allowed, that would be dumb
But i see everyday business transactions on-chain much like ordinal inscriptions. As in they are kinda just taking up blockspace unnecessarily (in my view)
The point really is that it doesn’t make sense in a future of broader adoption. For now it’s totally benign