Well the EU may break up the iOS walled-garden paradigm.
https://arstechnica.com/tech-policy/2020/09/draft-eu-data-rules-target-apple-google-facebook-amazon/
It may require Apple to not preinstall any apps, allow side loading, share data with smaller competitors, among other things.
No doubt these provisions would help companies like Spotify, by coincidence happens to be an EU company which was complaining about having to compete vs. Apple Music.
Would the EU be even contemplating these kinds of laws if it were EU companies which controlled mobile platforms like Apple and Google?
The EU has been pushing a Digital Single Market initiative for years. So for instance, they've phased out mobile data roaming charges, in an effort to craft a big EU market with the scale to compete against the American tech giants. Unfortunately for the EU, they've not yet been able to incubate home-grown companies which can create a platform which attracts consumers from all over the world.
So now they're trying to tinker and limit how platform innovators build these platforms.
Presumably, some startups could develop killer apps. only if they don't have to compete with Apple and Google themselves or are able to sideload on their platforms. Here's a prediction, if they go through with this, there still won't be any EU company which develop some apps or services which dominate mobile platforms.
Say for instance an EU counterpart to WeChat or something like that.
There's nothing barring an EU startup from creating something like WeChat now. In fact, aren't a lot of messaging apps from Europe, like Telegram? Would be a way for them to kill iOS Messages. So one way to create an app which would be used by virtually everyone on a given platform is to make the platform owner kill their popular apps.
I guess it would extend to things like Siri, Hey Google and Alexa as well.
A lot of these first-party apps are tentpole features added over the years to attract people to the latest versions of the OS and the latest devices. Siri was originally a third-party app and certainly there have been a number of messaging apps over the years. But in Apple's case, they made Messages good enough that most iOS users skip using third-party messaging apps as much.
But the EU can't have that. Doesn't matter how much user satisfaction there might be with first-party apps and services, they have to try to prop up some mythical innovators who can't catch a break because their brilliance is crushed by these platform giants.