Microsoft was in monopolistic position and yes it was a serious issue, but at least it was on standard computers. It was a de facto monopoly but you were mostly free to escape by removing Microsoft from your computer (which basically meant installing Linux).
Nowadays, our platforms are heavily locked, which gives Google and Apple an unprecedented power over all the computers of the world.
For sure, if you aren’t satisfied anymore with your phone / tablet because your OS vendor changes the rules months or years after your purchase, you are "free" to switch … as long as you are ok to lose all your investment in the platform, as long as you have hundred of dollars to throw into another phone for the the same usage, and as long as you are confident that the only other OS vendor will not make another stupid decision for the years to come.
The world is trapped between two aggressive monopolies and everyone acts like the market offers enough competition to fulfill everyone’s needs.
The state of affairs is bad enough that the most probable new competitor could have only been Microsoft.