Many years ago, Apple removed all apps for the 1st gen iPod touch from the app store, with no warning. I found out about this when I did a factory reset (ironically, this was to un-jailbreak my iPod touch, since the jailbreak slowed it down a little and I wasn't using any of its features). Imagine my surprise and frustration when all the apps I was using moments before - Spotify, Fruit Ninja, Opera Mini (the only browser that was acceptably fast on that device) - were suddenly gone with no recourse.. except to upgrade. Which I did -- away from an ecosystem where a company has that kind of control over me.