Essentially, “Let us lock in the commanding position of the US tech companies so it doesn’t make sense for anyone to introduce ACTUAL innovation in the way of new hardware, BUT try to reduce their profits.” Which is what Vestager was trying to do. Apple benefitted users and provided actual consumer choice by creating the iPhone. Does the EU think that Apple would have been MORE “innovative” if they just created an App Store for Nokia phones?
That is indeed the debatable territory.