With no charge-backs it has less of a cost to accept bitcoin than credit cards so places could offer a slight discount for it to entice consumers to use bitcoin.
No chargeback is a bad thing for consumers who loose the safety credit cards offer. If consumers prefer the safety of credit cards then the merchants will ignore bitcoin.
Bitcoin must offer something that benefit people before they want to use it. No such benefit exist today and therefore there is no interest in bitcoin.
No chargebacks mean that sellers have to work towards building trust.
It is not necessarily a bad thing, the bad apples will get weeded out eventually.
Bitcoin does offer benefits, but the discounts that could be possible using bitcoin haven't materialized yet.