[BjoernKW]

It's actually quite simple.

If you don't want to do business with someone from another country you certainly don't have to comply with other countries' laws. If on the other hand you do sell a product or service to businesses or people abroad you have to comply with the relevant laws of their respective home countries.

That's not a new or GDPR-specific situation but rather has been the case since pretty much the beginning of international trade.

[psyc]

Simpler: I put my dumb thing on the web. I do not care who you are. I do not care where you are. I don't waste my energy giving it another thought.

"I got a letter from your government the other day. I opened and read it. It said they were suckers..." On a serious note though, regulation is already onerous to small (and very small) business. The last thing a rational entrepreneur would do is tie themselves up with more of it voluntarily. Unless you can present a reason to do so that is not sanctimonious.