A while ago, I noticed that computers weren't getting any better. By better, I mean no longer faster in newer generations. I put up a post observing this trend a while back.
Today, I read a great article in the New York Times. The author observed the aging of Moore's law, and discussed how chips were becoming more power efficient, but not faster.
I think there's a gap between software and the capabilities of the computer. By gap, I think the computer is able to run more complex software, but we don't know how to write that kind of software yet. Nor are we able to articulate what we would like. Sounds like Kondratiev's Law at work. Computers are maturing and no longer spurring the economy forward.