Bottomley: Owning your Windows 8 UEFI Platform

You contradict yourself, machines where you control the keys are not restricted or closed...

I fully agree that it's reasonable to prefer open devices, you don't have to buy an MS Surface, get a Nexus 7 where you can replace the OS. If you don't want closed crap, don't buy it, there is a big enough market for open devices for them to remain available.

As far as EFI, I would ask which environment firmware and bootloader developers prefer, the impoverished environment of a 1980's era BIOS kernel or the more modern, comprehensive tooling of EFI (and GPT and dedicated boot partitions, etc. ad infinitum).