I’d say you’re wrong because I’ve been able to find it in most supermarkets in the countries in Europe I’ve visited. And it’s actual peanutbutter instead of peanutbutter + a bunch of sugar or weird supplements.
Just checked my kitchen, the store brand peanut butter from German Aldis has around 9% of additives (sugar, palm oil and salt) and it’s the only one they stock. This whole comment chain made me look up where to find 100% peanut butter and that ratio of additives unfortunately seems to be fairly common. There are brands that are 100% peanut, but for some reason these are almost exclusively sold in 1kg jars, i guess people who look for that are really into peanut butter. I mean, i am as well, and this stuff keeps good forever, so i may just go big next time i have to restock.
It’s difficult and expensive to find ones that don’t contain palm oil.