Orda, Intel blew it on PC security (their version of it)the first time around. There were people at the company in those days that had no clue that the market would not be receptive to a chip that is capable of tracking your movement around the Internet. I think heads rolled in the aftermath. Had Intel done a little marketing research and conducted focus group studies in advance of delivering P3, they would have discovered that the market wanted nothing to do with a chip that could track your Internet visits. It sounds like the propeller hat guys, needed to learn a thing or two about marketing. Where the old people failed, the new people at Intel will get it right this time.
There is always a natural tendency for some to re-live the "glory days" of the past, when in fact time moves on. Progress, technology gains, productivity improvements and learning from history make things better than the "glory days". Of course you know that. Things change.
TPMs wont be on everything overnight, but they will move quickly IMO. The cost of implementing TPMs into existing chips is becoming negligible. With the ever increasing need for security to combat network attacks, it makes it easy for big OEMS like IBM, (I heard IBM has TPMs in almost 80% of their Thinkpads) and soon others, including Intel to had TPM functionality to their offering. Other features get added to chipsets and PCs, and not security will be added as a feature.