Re:Not really (Score 1)

A lot of the high end editing and finishing systems (Davinci resolve, anything autodesk, apple shake (old), maya, etc) as well as a lot of sound gear (namely the midas xl8) have their OS based on the linux kernel. The apps cost 6 figures and are mostly NOT open source, however. Most of pixar's stuff is nix based as well

All the high end autodesk feature film finishing apps require redhat or centOS: http://usa.autodesk.com/adsk/servlet/pc/item?id=16477734&siteID=123112

Lots of feature films rely heavily on linux, just not on the open source aspect of it. Linux as an OS is very good at handling the very large data sets that thousands of 2k and 4k film scan files are, they also scale way nicer than any windows of mac OS based system ever will. For the right price there are several of the above mentioned companies that will send you a totally closed linux box that "just works" much like apple was years ago, on a way higher level though. I don't even know if they'll give you the root password.