The problem is that most normal people (HN is not normal - mostly for the better) don't even understand what sideloading is - let alone actually care.
How can we fix this?
(aside from making people care - apathy enables so many political problems in the current age, but it's such a huge problem that this definitely isn't going to be the impetus to fix it)
The irony of that iconic Apple 1984 add .
microsoft wishes they could have the level of platform control that google/apple on mobiles have.
It's pure luck that the IBM-compatible PC was not locked down and restricted, because at the time IBM had not thought of it as being important. When it became clear that it was a lost profit opportunity, the cat was already out of the bag and so IBM had no choice.
Microsoft repeated the same "mistake". But apple learnt, and google also from apple.