It is really hard to discuss with you, since you are even too stupid to understand, what people are telling you or you are misunderstanding it on purpose.
So, one more time: The credit card company charges the merchant extra, this extra costs eventually winds ab with the costumer. Do you really think, they just swallow it, because they are so altruistic? Secondly credit cards works exactly the same in Austria than in the USA(as far as I know)
We are discussing the difference between using cash & debit cards (your scenario) vs. using CC (mine). Other than a few gas stations in podunk towns, I do not get cash discounts.
I do get CC perks.
Ergo, CC is less expensive for me to use than cash. If you feel like subsidising my CC use by transacting with cash, you go right ahead. Unless you recieve cash discounts, that's exactly what you are doing
Do you want to go another round in this circle?
btw. I am pretty sure, there are also shops in USA, which generally don't accept credit cards and there for are generally cheaper. Maybe someone from the USA can confirm that.