Hilarious is all I can say to that. Apple would not even last for long in hard core Enterprise IT. Different ball game which requires lot of transparency, lot of vendor co-ordination, lot of backwards compatibility and other things like extended hardware and software support that Apple can't fathom doing. Oh and once you start going beyond web and email in enterprise IT - that's where it gets tough - people using Macs in IT don't go much beyond that and feel it's all easy ride!
If they were the 90% share Jobs wouldn't like the Anti trust suits over and over and over again. He would feel like an abused wife.