As a person that's been using Android since 2.1: that's a feature that's completely unnecessary to the average consumer. I use it frequently as I use f-droid,

As a person that's been using Android since 2.1: that's a feature that's completely unnecessary to the average consumer. I use it frequently as I use f-droid, but let's face it: Android is a (less successful) walled garden too. Nothing would change if Apple allowed third party stores either.