We live in a world where the brand you choose is more important that the quality or functionality it provides - but thats true of almost every luxury brand from cars to jeans.Therein lies the problem. Apples marketing muscle will cause people to pay 1.5 for a product when something like the Mobius or Drop Panda will outperform them for much less money. If you're an apple investor that's a win. If you're a consumer you may not even realize you just overpaid. I have Panda currently and the Hifiman Deva (a steal for 299) recently and I will be shocked of the Max sound as good as either. I guess you are buying the Apple experience which has value I suppose but for me, sound quality is the most important aspect of any headphone purchase.
To be fair to Apple, I have not doubt these will sound good or better that the competition and with better integration with the iDevices that one in two people already own.
They'll do it at a price range that's a little higher than their closest (known) brand competitors. e.g. Bose / Sony / Sennheiser / Shure and even their own Beats. I don't think an extra $150 is going to be a hard sell to folk in that market.
Lets face it, Most people will be just using these for watching badly compressed youtube videos, Netflix on the go, zoom calls and Spotify. None of which have a requirement for "high end" audio anyhow.
While it's possible they could be used as professional monitors (with the wire) - it's not really that market.
It'll certainly be interesting to see how the audiophiles feel about the sound once they get their mitts on them.