Not really. What I'm trying to show is that the difference is between the _preinstalled_ image and whatever you put on it.

I am yet to see a operating system _for embedded/mobile devices_ that doesn't have this problem.

The embedded/mobile world is hard and there's no way around it. Almost every device uses its own crappy non-standard stuff. This applies both to phones (almost all of it is non-standard), UMPCs like the Vaio UX (tracking stick! touchscreen! card reader!), and the Surface series (strange Wi-Fi chipset, strange Ethernet chipset, strange input devices, ...).