I generally agree, but as a caveat sometimes it's cheaper, more robust and more efficient to build an integrated system without having to worry about interoperability. BYD's electric vehicle chasis for example, seems to greatly cut manufacturing costs, even if it makes swap-in repairs harder down the road.

But, I'd guess this accounts for a relatively small fraction of corporate decision on lock-in strategies for rent extraction - advanced users should be able to treat their cell phones OS like laptops, with the same basic concepts, eg just lock down the firmware for the radio output, to keep the carriers happy, and open everything else, maybe with a warranty void if you swap out your OS. Laws are needed for that, certainly.