That is by no means the case.
It just takes a good number of people getting together and settling on a set of standards. The beauty of the general purpose computing device is it can support any and all at will.
Until people start thinking that "it's better to just let the big companies lock down hardware, then everything will just work!", which leads to hardware impls or subsystems like UEFI that actively fight to deprive the User of their rights to total control of their tool.
No thanks. My machine. My code, my rules, and my data. No one else's. i'll accept the onus of learning how to secure and safely use it. Convenience isn't worth the sacrifice of freedom.