According to this Businessweek article, Apple presents itself as a consumer products company. The iPod, iPhone and most of the Macs are consumer level. But under the hood of all the Macs is software technology that presents a real threat to Microsoft’s dominance.
XP is now 6 or 7 years old, including the 5 years it took for Vista. The hardware most companies buy to run XP workstations ia gaining years. The expense to shield XP is enormous. My company prevents viruses and malware, including keystroke watchers, but does not prevent internet trackers, so when my system slows, I run Ad-aware and Spybot which eradicates those minor buggers. Small to medium companies cannot afford the necessary protection. Single users are likely spam conduits 30 minutes after connection to the internet.
Ripe for the plucking!!