Looks like a Steve Ballmer moment to be honest. Slightly embarrassing, to say the least.
Earlier in the talk somebody asked him why Linux had never taken off on the desktop. He completely misses the answer of course. The "open-source-only" religious fanatics had dominated the Linux community for 15+ years and pretty much relegated it to nothing more than a cheap alternative to other UNIX-like OSes (i.e., for the server / workstation markets). Even Google had to go heavy on non-GPL licenses to make Android successful.
Of course, without NVIDIA's current efforts, Linux as a mainstream desktop is an absolute non-starter.