This is a pretty relevant read for those interested in these issues, as server needs drive much of the higher end of x86 processing.
http://news.com.com/2100-1010_3-5988090.html?tag=st.txt.caro
What Intel has realised, and what I think the rest of the industry needs to realize, is that they need to sell something else than performance. Wireless range, better sound, improved displays, longer battery lives, lower weight, lower noise, better looks, smaller size et cetera are all reasons for people to upgrade, and they will when the aggregate benefit is sufficient. Note how many of the above that Intel is already pursuing. Also note how important lower power draw is to many of the items above.
Games, and graphics performance has been helping to drive the upgrade cycle even in the face of slowing performance benefits, but I would argue that this is not sustainable, as graphics processing has some of the same basic problems as general computation, and the gfx IHVs approach of accepting higher power draw actually works against a lot of the other items on the list that could help drive sales. High-end graphics currently swims against the greater trends and currents. It won't hold. (Or it might become a separate evolutionary branch on the PC tree, but I doubt that.)
For a few years now, gamers have been a target of marketeers, as they are one of few groups who has any real reason to care about the performance of their computers at all, and they seem to be perceived as a group with more dollars than sense. This desparate appeal to juvenile male gamer egos is annoying but understandable, as is for instance the naming game in graphics cards or the manouvering with various sockets in the MB/CPU scene. It is all done in order to maximise sales, and keep driving an established consumer pattern that is no longer justified. The industry has a common interest, and it is up to the buyer to make sure the value is there.
I'll submit that in the future, that value will be less found in performance and more in other aspects of computer usage. (Dual core processors is an anomaly in this trend, and a welcome one at that, but I can't see much benefit to most people going to two processors and very little beyond four meaning that this won't drive sales for much more than a generation or possibly two of lithography at most.)
But I also feel that focusing on general useability rather than performance alone is a sign of maturity, and most welcome.