Together with Google they do (as I said - I believe the other competitor they‘re forming a duopoly with need not be named but is obviously Google).
You need to be clear about the topic you’re discussing because you sometimes equivocate between talking about phone hardware, operating systems, and App Stores.
For phones, Apple and Google do not form a duopoly. Apple has less that 40% of the market with Samsung (31.12%), Xaiomi (12.95%), Huawei(2.82%), and Oppo (2.36%) rounding out the top 5.
If you mean operating system, that's different, but not as much as you think. Sure, Google's Android has better than 50% of the market. But it is spread across several manufacturers, each of which uses its own proprietary UI and extensions. The only manufacturer who offers a near-stock version of Google's Android (besides Google itself) is the EU company Nokia.
If you mean App stores, Android has had alternate app stores for a while. So there was no duopoly when the EU implemented the DMA. And now, due to the EU's little snit, Apple also offers them.
Google Play and Apple's App Store still have a majority of the market, but only because consumers don't trust other App stores unless they can identify a trusted brand associated with the store. In addition, the behavioral sciences have shown that consumers just don't care about Vesteger's opinions on market options. Consumers simply don't want that much choice.
If you mean eBook stores, the actual subject of this article, then Apple and Google are dwarfed by Amazon. In addition, there are ample competitors for the eBook market in the EU, including Rakuten, Barnes&Noble, Lulu, Georg von Holtzbrink, etc.
…and they have been rewarded for that a lot of revenue, earnings, money.
You’re shifting back to hardware, but it’s only part of Apple’s offerings. Their software provides most of the value, especially seamless interoperability across their ecosystem. The full value of Apple’s products isn’t unlocked without the entire ecosystem, and that’s what people pay for. That’s the value you attack.
Neither they nor developers have a sensible choice in operating system or mobile application store for phones.
So, you are saying that iOS and Android aren't sensible choices? That is simply hilarious. Please, be my guest. Produce a sensible choice. You don't even have to start from scratch as there are open source operating systems (many flavors of Android, many flavors of Linux, Sailfish, Plasma, Open Harmony, KaiOS) you can fork as the basis for your own version. Please please please, give the world a sensible choice. LMAO.
The smartphone market clearly is very competitive. The ones for their operating systems and distribution of applications are not.
Let's look at operating systems first.
Google dominates because the nature of non-regulated economics makes actors tend towards their own specializations where they can add differential advantage over the competition. For example, Samsung makes great hardware. They could make their own software, but they would not provide any extra value by doing so. Indeed, they would harm the value of the products because their customers would likely not be able to leverage the huge investment in apps that have been made for Android. Most other manufacturers, even those in the EU, made the same economic calculation as Samsung.
Apple actually keeps Google from being a monopolist by providing their own operating system instead of using Android. Rather than applaud their initiative and their success, which aligns with your putative goal of stimulating competition, you want to lump them in with Google and cry duopoly. That's just precious.
As for App Stores, you have zero to complain about. EU legislation did what you want. Both iOS and Android allow alternate app stores. In fact, Google has allowed that for years. The fact that the Google App Store dominates because users trust Google and that app makers don't want to deal with a multiplicity of distribution channels should have told you that the EU legislation would do little. Your problem is you don't like human nature and you deny the science which describes it.
I am, when consumer pricing includes 30% transaction costs on sales.
As I said, the keystone markup on average over all markets is 50% over wholesale. Deal with it. The 30% is lower than average and commensurate with other digital markets. It compensates Apple for them giving you access to their customer list, using their distribution network, and using their App Store for both marketing and sales. You want to deny there is value in all of that, but that's only because you want to freeload. The intensity of your plea does not change the facts.
So did I [go to business school].
Odd. There are things in marketing, economics, and behavioral sciences that are taught in the schools I attended that don't appear to be reflected in your arguments.