You are absolutely right we can not make them give us access to drivers but just like with nvidia there are people willing to figure it out. I am not for government oversight but if the manufacturers refuse to offer any help then they may need to step in. The EU has made massive strides towards standardizing manufacturers. I also don’t think it would be necessary for the manufacturers to open source their software but its already wrote just release it as closed source so it could be used at the community level.
I am not positive but if it still true originally webos was not linux. It started off as a very ahead of its time cell phone os made by Palm Inc. After they failed to gain traction it was sold to LG or made open source then sold or bought. LG uses it in their TVs but if I recall the base os is not Linux but some form of palmos assuming it has not been moved to Linux.