Until customers don't want to but because they are afraid they have no way to get their money back if anything goes wrong.

(Chargeback exists for a reason, and the reason isn't to piss off businesses).

Only if they're on the receiving end. You need to remember that businesses also buy things, and often by credit card.

Chargebacks exist in the real world because long, long ago people recognized that electronic payment systems are fertile soil for scammers. The "lack of chargeback risk" that cryptobros keep chirping about is nowhere near the flex they think it is.