Well, the EU, being very much dictated by Germany, who have a large car industry, has a vested interest in making sure that if people want to have a better car they pay for a better one new rather than upgrade with an aftermarket chip.
Paying for a horsepower upgrade chip is something very few people have any interest in doing. Mostly irresponsible assholes who are a danger to others, maybe a few people who need it to pull trailers or something.
The above statement sounded way more edgy than intended lol