[mdlug] CAD vs CAE (for linux)

[dean]

Hello, I was wondering if anyone can shed any light on this question:  
Why does it seem like most if not all of the major CAE vendors have 
converted their apps to linux but the CAD vendors have not?

At my current job, my boss likes linux and we use it wherever we can, 
along with legacy unix.   He would like to roll out CAD linux boxes, but 
neither UG nor Catia are available for linux.  

Does it have to do with 3d graphics?   Hypermesh, Ansa, and Star CD all 
use graphics, and they all exist for linux.   We use them on linux.    
And abaqus, I think.   

Is it politics and/or M$ money?     

TIA, &, Scratching my head, Dean