Erm, I don't understand where this impression there's no high quality media content creation tools available for Linux is coming from...

I guess it depends what segment of the market you're looking at: 80% of the large VFX houses in the world use Linux to do the modelling, texturing, animation, lighting, rendering, compositing, using programs like: Maya, Mari, Mudbox, SoftImage, Houdini, Katana, PRMan, Arnold, Nuke.

All those high-end apps that are used everyday to create feature films (and tv shows and adverts) work on Linux.