IIRC Epic has been caught several times in the past few years breaking store rules, like sidestepping the platform payment system and misrepresenting data collection attestation. I don’t think it’s anti-competitive to decline to sign a vendor’s apps. I mean, I like Epic’s developer platform, but it sounds like their lawyers are high if they think EU courts will force another company to do business with them, especially if management has been intentionally abusing the system.
Well the EU is being more proactive about it than over here in the US. Our regulatory bodies have been hobbled continually for decades, and now I guess we just let these giant corporations do whatever they want.