The relevant question for Apple is here:

Will those users buy OTHER headphones than Apple then, or still buy Airpods...?

From my observation the "properly locked-in" Apple user buys Airpods and mostly replaces them with newer Airpods when needed, because of Apple's artificial advantage in ecosystem interoperability (the exact reason of the dispute with the EU)

Yeah but disputes like Apples with the EU can take 10 years to litigate and settle by the time Apple has raked in more billions and crushed more competitors. So they know they can keep stalling and appealing as time works in their favor.

Maybe, but currently it seems that Apple prefers to not "litigate while crushing the competition", but instead "retreat and rally up the userbase". So at least in this aspect the DMA seems to work surprisingly well...

I also think there is little for them to litigate at this point, they were exchanging extensively for more than a year on how to reach compliance, then the decision [0] was made.

There are also separate procedures for the specification of compliance and investigating (non)compliance. Apple might continue to have a hard time litigating on non-compliance if they co-worked with the EU on the exact expectation of compliance beforehand.

https://ec.europa.eu/competition/digital_markets_act/cases/2...