And WINE/VirtualPC running so well may be the biggest disaster for MacOS -- why should Microsoft continue to support MSOffice/Mac when you can just run the Windows version in WINE? Why should Adobe build Acrobat for MacOS, when the Windows version (runs just as fast in WINE!) has more features and costs less??
Good Windows emulation is probably what killed OS/2, it can kill OS X too...
Except OS/2 was competing for the same corporate desktops as Microsoft. Apple's competing for -- and winning -- a whole new market of amateur/prosumer media creators. Who cares if Mac OS X/Intel doesn't run Office natively? As long as it runs GarageBand, iMovie and iDVD, no one.