The part in the flow where you select between allowing app installs for 7 days or forever is a glimpse into the future. That toggle shows the thought process that's going on at Google.

I can bet that a few versions down the line, the "Not recommended" option of allowing installs indefinitely will become so not recommended that they'll remove it outright. Then shrink the 7 day window to 3 days or less. Or only give users one allowed attempt at installing an app, after which it's another 24 hour waiting period for you. Then ask the user to verify themselves as a developer if they want to install whatever they want. Whatever helps them turn people away from alternatives and shrink the odds of someone dislodging their monopoly, they will do. Anything to drive people to Google Play only.

Apple was clear that they were offering the safety of a walled garden from the start.

Apple didn't lie about supporting a user's freedom to run anything they like, only to execute a rug pull after they successfully drove the other open options out of the marketplace.

If Google actually takes away the ability to run unsigned code, my next phone will be an iPhone. And I rarely even run unsigned code.

Honestly, it might finally result in me fully exiting the Google ecosystem.