Sure, but let’s be real, the vast majority of people who would buy these would be American.

Also, the same privacy laws apply to the UK and I believe Canada and Australia. That’s a pretty large population, not just Americans. Sure the EU is well known for having much better privacy laws (much better laws in general IMO), but by no means are they the majority.

You absolutely can. There is no expectation of privacy in any public place except restrooms. You just can record in private homes and of course any private business can set their own rule for recording, but otherwise anybody can record anything in a general public place.