>Apple makes the devices, they are 100% legally allowed to only allow apps from their own App Store and that precedent has already been set.
This is false. As proven time and time again, the Device Owner has full legal control after purchase.
It is monopolistic behavior due to the scope of the control from Apple. The devices are the owner's property, and it is monopolistic for them to implement software/policies/hardware blocks, that prevent users from using the devices as they see fit.
Take a simplistic example, Keurig. Keurig tried to prevent users from using any other coffee pod besides theirs. There is precedent to these monopoly lawsuits.
https://time.com/2913062/k-cups-war/
https://topclassactions.com/lawsuit-settlements/consumer-pro....