alt Hacker NewsYou're mixing debit and credit cards.
In the EU, debit cards are pretty common, and largely its a network effect. You need to get terminals that are supported by your payment provider.
A lot of merchant terminals are provided by banks, and frankly they are itching to get a sweet sweet cut of each transaction. Not only the information, but the cut of each transaction. Something like 0.2-1.5% of each transaction. (I'm sure mastercard and visa give them a cut)
For Credit cards, the banks/operator already handle most of the risk, and then pay visa a percentage for the privilege of charging usury like rates
I'm not mixing -- if I have $0 in my bank account today and I don't get paid until Friday, I cannot buy food today with a debit card. Being able to buy things today on the promise of future cash flows is a risk-based financial product and risk comes with premiums. (Again: could you solve this problem by having more money in your account? Sure! But there are a lot of downstream consequences of every consumer and business in society operating that way and there are real trade-offs that should be discussed with more nuance than "monopoly hoard ledger boo")