"Sailfish X is currently available in the countries of the European Union, Norway and Switzerland ("Authorized Countries") and the use of our website and services to purchase Sailfish X outside of the Authorized Countries is prohibited."[0]
In practice only the act of buying the actual Sailfish OS license in https://shop.jolla.com needs to be done from the the EU/supported countries. That can be done via a EU VPN and none of the Jolla provided services (RPM repositories needed for system updates, etc.) are geoblocked. I went to Japan with Sailfish OS phone twice with no issues at all.
For reference:
- getting SFOS from outside of EU:
https://together.jolla.com/question/184861/ask-purchase-sail...
https://forum.sailfishos.org/t/has-jolla-abandoned-sailors-i...
- stats from the community Sailfish OS software repository showing a lot of traffic from countries outside of the officially supported area
I think it is because of the USA's allowance of trivial patents which act like a trade block.