Its a better OS, more stable. And is more efficient at indexing harddrives. Since Inventor uses a lot of Virtual Memory, that alone would be a significant benefit to using Linux.
Surely compiling the program for a Linux installation is not beyond Autodesk?
How much of a premium would you be willing to pay for a Linux OS (or Mac OS while we are on the queastion) certified AutoCAD or Inventor?
How many other users do you estimate would be willing to pay this premium?
How much to you estimate it would cost Autodesk to develop versions certified to run on these OSs?
When the numbers look attractive I predict you will see Autodesk software certified to run on these OSs