reference: https://en.wikipedia.org/wiki/Unified_Extensible_Firmware_In...
reference: https://en.wikipedia.org/wiki/Unified_Extensible_Firmware_In...
Can you provide any citations for the assertion that Microsoft are currently (2016) forcing hardware companies to tie their products to Windows?
Such devices come with a locked down UEFI, the "legacy" BIOS is deactivated and often hidden behind shortcuts that one has to press during boot. Also it depends if you bought a business or consumer hardware.
Reinstalling an os is a technical task, which requires some knowledge to do effectively. Having been doing this for 25 years or so, I can safely say it's easier now than it used to be...
And no, it was easier before Microsoft introduced Windows 8 and 10. It was very easy, just insert a CD/DVD with a boot-image. Read about UEFI and "secure boot" came along with Windows 8: https://en.wikipedia.org/wiki/Unified_Extensible_Firmware_In...
Might I suggest you take a break from the keyboard, perhaps go for a nice walk in the fresh air:)