In no particular order:
* They’ve just opened up Apple hardware to gazillions of potential buyers, including corporates and gamers [Gazillions is a technical term].
* Microsoft will be quite happy: they can sell XP licences to Mac owners now. It doesn’t affect Virtual PC sales (assuming VPC is coming to Intel Macs), and Microsoft doesn’t make PCs.
* It’s a big kick up the arse of the PC manufacturers.
* It’s going to generate acres of positive publicity and general warm and fuzzy feelings towards the firm.
I’ll no doubt add more when I’ve had time to think about this.