The point in my “ideal world” is that because they are forced to open source the software and allow users to replace it, other users could for example try to implement android TV on that old Sony Bravia tv. If the Android phone market is anytbing to go by, it is a real possibility, depending on the popularity of the tv
Might be your ideal world but that will not happen. The only reason Android is “open” is because Google wanted to hit Microsoft and Apple where it hurts. If they were super pro open source they would have released all code for Okay Services and the hardware in Nexus and Pixel.
But they didn’t… So… Yeah… Not even Google is sharing your vision.