Weby, I think you are right. The virus/hacking problems that have plagged the Windows platform are magnified by it's size, monopoly dominance, a lack of responsiveness by MSFT to address platform security, a distrust and hate of MSFT because of it's monopoly, etc. The Windows platform is almost 20 times bigger than Apple and has been for almost 2 decades. It does not take a rocket scientist to figure out that all things being equal, there will be more crime in a city that has 20 times the population of another like city.
The market that has the 95% is going to set the rules and standards on computing. At some point as the TCG gets traction and deploys in volumes with enterprise and than consumer, Apple will probably need to engage in TPMs in some way. I don't know if TPM's in their current state are compatible with Apple platforms, and how much development work would be required by Wave to support this small % of the market. Wave seems to have their hands full addressing the 95% of the market with the bigger players like Intel, and hopefully Dell deploying TPM's in volume.
That being said, there is no question ipods are a neat little device that is selling like hotcakes. My son has one. We still have not seen what kind of effect that Janus will have on this market. What will the devices cost? What will the services be like? Barge, where are these Janus devices?
I've read a few anecdotal comments that some ipod buyers will switch to Apple, but I really don't think it would make a huge dent in the Wintel duopoly, at least in the short term.
Up to now, the apple people have been saying, come to us, join us, we are more secure, more stable than windows, less hackers, etc.etc. But won't that change as TPMs and a trust infrastructure get deployed in a Wintel development? The PC will be more secure, MSFT will look better because of it, because there will be less attacks on the platform. As TPM's work their way into consumer PC's, Apple will need to follow. If Apple puts TPM's on consumer PC's ahead of Wintel platforms, that would be great news, but I don't see that happening.
At the end of the day, Apple's share of the PC market will stay in the 3-5% range, IMO, which is a big market, but it's still much smaller than 95%.