That’s interesting, because every time there’s something about a money transfer service, there are a ton of posts saying “Oh, the United States is so backwards, in Europe you could do this forever.” Apparently, by Europe, they mean the particular place they happen to live in.
Trite comment. Debit/credit cards never took off in Germany because everyone had a Giro card that worked perfectly well for cashless payments. And for online payments, PayPal filled the gap quick enough. The average German saw no reason to request a Visa/MasterCard from their bank for a heavy fee when PayPal did the job. That's also the difference: Germany never had the "Here, have a free credit card" culture.
With a more benevolent reading of my comment you could have seen that I do consider them equivalent for cashless local payments. My first sentence was meant as "[American] debit/credit cards". This doesn't invalidate anything I said.