Re: Why put DOS on a mac?
Seems like you missed out quite a few big hitters there I'm afraid. Besides that, there's not a single significant piece of *OSX-only* 3d software in either of those lists.
BTW Max is still one of the most used 3d software, especially in visualisation. And AutoCAD is at least a version behind on mac, not to mention all the other missing autodesk stuff.
Mac still has the edge for web and music people as far as I know though, so you are welcome to that lot if you like :)