Apple App Store seemed like such a revolutionary, simple way for installing any app you want, anytime, on any iOS device. The joys of a walled garden suddenly take a turn to the wrong direction when you realize that any app that's no longer for sale  in the App Store might not be available for you to install ever again.

Does the "Post-PC Era" mean there will be no marks whatsoever left in history about what apps we once used to spend our days staring at on those shiny little screens in our pockets?
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