I have a feeling they'd lock them down and prevent alternate os installs.
Exhibit A: You can easily find bootloader-unlockable phones in the west (Google, Motorola), and in Europe, even some of the Chinese phonese are bootloader unlockable. But in mainland China, bootloader unlocks are being being heavily restricted.
Extrapolating from this behavior, its not hard to see them doing the same in the future for personal computers.