The fact is that Apple controls enough of the users that everybody wants that they have at least as much influence as Google does in mobile. That they've chosen to protect their fat profit margins and accumulate the largest pile of corporate cash in history while ignoring customers that can't afford premium devices should not insulate them from similar scrutiny.
If the EU wants to preserve any credibility on these issues they should take a hard look at Apple's refusal to allow other browser engines on iOS.