As for the operating system features and hardware, I reiterate that Apple makes enough from device sales.
I see this argument being floated numerous times, and I still cannot accept why it has to be an "either / or" situation.
Yes, consoles are typically sold at a heavily-subsidised rate which the manufacturer eventually recoups by charging game developers 30%. But that's a business decision, not one borne out of charity. Apple chose to price their products as expensive as they are (which in turn means that Apple will never have the majority market share for any of their products). It's a conscious decision to go after the higher-end segment of the market (ie: people who can and are willing to pay a premium for nice things), precisely so Apple can continue to sell them more stuff after the initial sale of the iPhone, from additional hardware to apps to services. The higher price is also what pays for 5-6 years of software updates and the various services like Maps, Siri and iMessage, none of which Apple monetises via other means like ad revenue.
Likewise, there is no logic as to why the App Store should be run as a loss leader funded solely via hardware profits. Or would you rather Apple charge developers a higher annual fee, or some other means of monetising their IP?
In my opinion, there is nothing wrong with Apple double (or triple, or even quadruple) dipping. Google gave up that right when they decided to pursue a licensing model and chase profitless market share with Android. Microsoft has pretty much perfected the art of snatching defeat from the jaws of victory because they somehow always end up fumbling in the implementation when it mattered the most. You reap what you sow, and if anything, Apple has earned the right to, simply by virtue of them being the only company willing to even invest billions in having an ecosystem in the first place.
Whether Apple has made enough money or not is besides the point. Nobody gets to make that call besides the people running Apple.
(„But… but… that‘s just communist!“ and „EU and its companies are losers!“ - I‘m already bracing myself…).
I wouldn't use the term "communist". More like "protectionist". The DMA is basically an admission by the EU that it cannot hope to compete with US tech giants, in part because the economic and cultural conditions that fostered their creation and growth simply do not appear to exist in the EU.
Like you said, the EU does many things right, from roaming to merchant fees, and a way stronger social safety net compared to the US. However, there is also the saying - there is good in bad, and there is bad in good. This more comfortable way of life in the EU also leads to less drive, because how many people are willing to venture out of their comfort zone and toil long hours in a bid to create the big thing (EU law wouldn't even allow it).
I mean, just read the story of the creation of the 1st gen iPhone. It could only ever happen in America!
I live in Singapore, where our rigid education system has often been criticised for producing workers who tend to be less risk-averse in general. I have a fairly stable job as a government civil servant, and at this stage in my life, I wouldn't leave it in order to strike out on my own, but I also recognise the importance that somebody else somewhere out there in the world does, else all technology advancement will stop, because nobody wants to take the risk of disrupting the status quo and invent the next big thing.
I guess each party is simply doing what is best for their own interests. Apple naturally wants to preserve their margins, the EU wants to ensure healthy competition for their own small businesses (though I am pretty sure that Spotify has had a hand in crafting the DMA), and I guess, well, let them fight and we will see who ultimately prevails.
I really don't know where I am going with this. It's like the story of the oak tree and the reed. Sure, the oak tree eventually encounters a gale so strong that it ends up toppling over, but until that day comes, it will continue to stand tall and proud in the face of opposition.
Apple is that oak tree, and I am not ready to count Apple out of the fight just yet.