It might be a very European view to the problem but: Why does the American government does even tolerate this credit card garbage business in the first place ? We are in the 21th century. Most payment can be validated electronically and processed under 200ms. I can pay something with my phone and get money taken directly from my bank account within seconds. There is absolutely no need of Credit Cards where Debit Card…
You're mostly correct but I should point out one thing that credit cards do that debit cards don't really do in America: fraud protection. Credit card companies spend a lot of money protecting their customers from card number theft (which is rampant in all parts of the world)
(Also keep in mind that it's often the same companies that do debit and credit cards. For example, I have debit cards in the Mastercard and Visa networks, but no credit cards. I assume most of the fraud prevention efforts benefit my debit cards as well.
Also that relying on a bunch of numbers alone is pretty sketchy. But I am choosing to interpret fraud more widely, than just card number theft. I am pretty sure card number theft is pretty low(er) in parts of the world where people pay with chip-and-pin, and don't use numbered cards.)