What's wrong with SEPA instant? A payment flow of 'scan code, confirm in banking app' is hard to beat and we're 95% there. And all you need is your own banking

What's wrong with SEPA instant? A payment flow of 'scan code, confirm in banking app' is hard to beat and we're 95% there. And all you need is your own banking app, no shady payment processors required. You lose some stuff like the credit part of the credit card (although virtually no one I know actually uses credit, only debit cards) and consumer protections (chargebacks), but I don't think those outweigh the extra costs at all.