Dvorak makes a claim that Apple is going to adopt Windows for compatibility and dump OSX. However, the idea that deep compatibility is necessary has lots of legs.The reason is corporate environments. Lots of my best employees want a Powerbook. The problem is that there is always one or two corporate apps that need Windows. Virtual PC is nice, but out of the box compatibility/dual boot/emulation is what I need. The cool part of the corporate marketplace for Apple is that it makes it possible for people to buy that expensive 17" Powerbook (spending $3,000 to properly outfit/leverage an employee that gets paid over $100 k is a no brainer in a corporate setting).