Additionally, and specifically in Sweden, the fees that banks charge businesses for handling cash (picking it up and depositing it at the end of each business day) have increased significantly in the last decade or two. This has been a significant factor in driving businesses away from cash - it's just expensive for them to deal with.
The US has a much less secure system specifically because there was much less credit card fraud in the US than in Europe.
Chip and PIN was an attempt to combat the rampant fraud in Europe.
It may be true at this point, I haven’t been tracking recently, but it wasn’t in the past.
So if you are a law abiding citizen you can easily be pissed off that you get to pay taxes and they don't.
For a few years "we don't take card" was widely interpreted as a strong indicator the merchant would evade taxes, and "I won't go there anymore" was a common reaction from some people. These days it's technically illegal and yet you will still find _some_ shops that only want cash.
That seems totally fair if they can’t pass that cost on to you for using a card. Why should they have to pay to accept your patronage?
And you didn’t answer why you shouldn’t pay that fee.
Managing cash has costs too, they're just harder to quantify: you have to ferry it to a bank, you have increased risk of theft, fraud, and robberies, you need extra time to actually check the register etc.
And then you risk losing business if you don't offer card payments because it's just more convenient for most customers (you may like wise lose some if you don't take cash, but that's a vanishing market).
That's what makes interchange and network fees so much more problematic than acquiring fees. There's very healthy competition between credit card acquirers and payment service providers on both features and price, but in the end, you have to accept whatever card your customer has or there won't be a transaction.
And you're mistaken if you think cash is cheaper for most stores. You risk theft (so need to pay for measures against that), you have straight losses from mistakes, have to spend time handling and counting cash, spend time depositing, spend time buying change, etc etc
Regarding cash, does your bank not charge a fee for depositing cash?
At this point the cost of handling cash is way higher than handling cards and as no one in Sweden ever uses cash its no longer relevant at all anyway. Now many (maybe even most?) dont accept cash to avoid the cost of handling cash instead.
(The fact that credit card networks continue doing business in Europe proves they're still profitable and the US is getting ripped off by these fees)