But, it doesn't seem to support Nvidia being far ahead of the competition based on the drivers with secret sauce. The criteria used when selecting a graphics solution for a particular machine is complex, I'm quite sure. It cannot be reduced to who's got a better driver. And it is rarely made by the end user (only enthusiasts do that).
When it comes to Linux, binary only drivers are dreck. Every time you have a problem with your kernel, the first question by support is: is it tainted? If yes, you are out of luck, because nobody's going to touch your problem with a ten foot pole.