I guess. But that doesn’t matter, it’s against a prime EU principle - free trade inside the EU. They can offer their products cheaper in those countries but they can’t tell other EU members not to buy there.
I actually got in contact with zenimax about that issue 10 years ago and after some back and forth they just forwarded me to their legal team. And I sure made a complaint with the EU about it. I’m sure there were lots of complaints about that issue but I feel somewhat validated right now.