*Ahem*, all these 'technologies' you are so harping about have been tried by our 'backward, card-carrying, cash-carrying' societies and rejected because they were not better enough than solutions at hand. Incase you are forgetting, our backwards society invented all of these technologies.
FYI, Mastercard evaluated all of these usecases way back in 2013 under the brand QkR. It didn't catch on because it was no more convenient than a card in general use.
BTW, African nations and south asian nations have been also adopting this because for them printing a QR code is cheaper while here in richer societies cards which have been more convenient are preferred.
Honestly, tell me, why should I take my phone out, unlock it, launch an app, scan a code and waste time till camera focuses and the app actually detects the damn QR code.
Instead, I will take my wallet and even without opening it, just tap on the reader and walk away. I will also get a printed bill as well, if I wish. As far as carrying wallet goes, I will have to carry it anyways, my company ID, my insurance card --should I meet an accident-- are in it. If in rare case folks who don't want to carry a wallet, we have invented this premitive but effective solution.
Stick it behind your phone-case and put your cards in it. Ta~da!
No wonder in western societies where convenience is more preferred and banking services are more mature, QR code is not as ubiquitous.
TL;DR New and more complex does not mean better.