A combination of on-device geolocation checks and Apple ID restrictions stop alternative app marketplaces from working outside of the EU — even preventing app updates.
That means curious users can’t create an Apple ID, set it to Germany, and disguise their location using a VPN to install alternative marketplaces.
Traveling to the EU won’t work either, at least for long. There is a short-term travel allowance if EU users go outside of the geolocation boundary, but it isn’t forever.
After a grace period some features will stop working, like installing alternative app marketplaces. Apps that have already been installed will still work, but won’t be able to get updates.
