From what I know, the current rules don't say anything about region locking features like apple is doing. The EU regulations might be slow in reaction time but they are not playing around. You can be sure that they will continually close loopholes and avoidance strategies until Apple (and others) aren't a gatekeeper anymore.

The way Apple and others misuse their market position to get away with anything is ridiculous. At a certain size or influence you shouldn't be both a platform for other companies and products and a participant in that platform while giving yourself all sorts of advantages.

Airpods are decent but they have most of their market share due to the massive integration gap from competitors. So shit it's impossible for anyone to compete.