I don't see why nVidia can't release a semi open-source driver. For previous generations they can open up everything while the latest generation would come with

I don't see why nVidia can't release a semi open-source driver. For previous generations they can open up everything while the latest generation would come with an pre-compiled blob that can be disabled with a simple compile flag for the purists. This will allow them to play nice with the kernel, support previous products while taking bug reports and patches, and help game engine designers target 90% of nVidia's user base without signing an NDA.