alt Hacker NewsAndroid devices are unlocked, non-manufacturer OSes are still well outside of "easy" to install, much less get all features working.
The main problem is that people maintaining the OS build for your hardware is the same people making the hardware. If legislation forced to divest both into separate companies the support would last far, far longer.
I would also want that for TV software or car software.
But I guess there is no money to be made on that software...otherwise we would already see a bunch of non-manufacturer companies offering software for 3rd party devices that are unlocked, wouldn't we?
Or maybe the used hardware is just not documented well enough