Oh. Linux thing? I know more people use Linux for Blender than Macs. Never been near it myself. There be dragons of nerd’s complexity! 
Ok actually looked at the link.
No idea who they are but they want huge sums for this, seemingly just to help install Blender on any of the operating systems, and support in problems with it.
Ubuntu-maker Canonical announces it will offer paid enterprise support for Blender LTS.