NVidia only loves open source to a point.
NVidia has yet to release an open-source version of their drivers to allow Linux to better operate on their cards. NVidia is the primary reason that Sony decided to disable "Other OS" support on their consoles. And CUDA as an interface will never be on ATI cards short of a merger or buyout. Yes, OpenGL/CL is on their new cards, but not the latest version.
While I think Intel/NVidia's infighting over hardware architecture and graphics implementation is ridiculous and I side with NVidia on a lot of that mess, Big Green still isn't innocuous of "industry influence" on technologies. Gaming on Linux is still largely a joke compared to Windows systems (not the fault of the progenitors of Linux gaming: Wine, Cedega, indie developers doing what they can, etc., but rather short-sightedness and backroom dealing) thanks in part to companies like NVidia.