Crazy EULA #2: Microsoft Says No To Vista Virtualization

From the Microsoft Anti-Competition files: a new EULA for Vista disallows use of certain versions of the new OS with virtualization software like the popular Parallels. The software allows for an OS and its applications to run inside another OS (personally I use Parallels to run AUTOCad on my MacBook Pro):

For Vista Home Basic and Home Premium Editions:
“USE WITH VIRTUALIZATION TECHNOLOGIES. You may not use the software installed on the licensed device within a virtual (or otherwise emulated) hardware system.”

Even the Ultimate Edition does not allow use of certain apps. At the risk of sounding fanboyish, is this a way to stick it to OS X users who want to have the best of both worlds?

Link (via TAUW)