I realize that. Although in some cases I really wonder.
I seriously doubt the EU as a whole got together to come up with desire to go after Apple. One country probably started the process, realizing that suing Apple could bring big bucks (or is that Euros?), and the rest of the EU countries jumped on board. This whole idea about Apple protecting it's ecosystem is just spitting in the wind out of spite. Apple should protect it's ecosystem.
If an unvetted application from alternative source gets installed, mucks up the Apple device, who is to blame? I can almost guarantee that Apple would be blamed. What if the device is under warranty? Should Apple be responsible for repairs? If Apple is forced to allow alternative OS's to be installed, should Android devices be force to allow IOS to run on the Android products?
There are alternative platforms if people don't like Apple. I see no reason why Apple has to allow anyone access to their system. If people did not like it, they would not buy the products. That has not been the case with Apple. If Apple was a minority player, with a locked ecosystem, no one would say a word. But Apple is dominant and has deep pockets. Thus Apple became a target.
Having been involved with Windows from the very early days of Windows 3.1, I wish that Microsoft had been able to lock down Windows. Prevent unvetted applications, and especially drivers, from being installed. At one point in the past the BIOS was locked and protected. COMPAQ did a clean room development of the BIOS. That opened up the flood gate of clones. From that point forward the compatibility problems have been signifiant. From misbehaved drivers, software that crashes the OS (a blue screen), video cards that go bonkers, DLL hell, the list is long. Apple was wise to lock down their systems to avoid such issues. The EU will single-handedly destroy the security and reliability of the Apple ecosystem.
The people in the EU who are making these decisions are generally technological idiots. About the same as the representatives in the states. Most of them probably still have VCRs flashing 12:00 and the clock on the microwave still reads 00:00.