The potential legislation would be specific to the EU, but that doesn't really matter; this market is large enough that it would directly affect other markets. Either the games are patched for all territories or others will make the EU-specific build available. One option generates positive press, the other negative, and any difference in cost would be negligible.

There's also the argument of preserving art.

It would affect video game developers that want to publish in the EU.

It likely won't affect Thor directly unless he makes a live-service game in the future. He just thinks it's harmful to the industry and tends to speak out about stuff like that.