EDIT: I remember there's also had the "requirement" for worldwide businesses to setup physical offices in the EU before accepting EU citizens as clients. I put "requirement" in scare-quotes, because I find that equally difficult for the EU to enforce throughout the world. Maybe, the GDPR will either apply only to those companies that have set-up physical offices in the EU and not the ones that haven't, or cause the creation of The Great Firewall of Europe to block out businesses that haven't set-up physical offices. I do wonder if some nations will allow this enforcement of foreign law by treaty.
EDIT 2: s/Realistically speaking/Maybe/. Realistically speaking, I have no clue how GDPR enforcement will play out.
[1] https://jobs.netflix.com/locations/amsterdam-netherlands