Consoles are a "natural" development from the arcade machines. There appeal is the same. A quick and go game. I like that feeling once in awhile.
There are a lot of reasons, mainly economically, why they lead the market of video games today. But one thing is sure, the consoles development are dependent, in a certain way, from PC development. If they begin to cut the development of graphic cards in PC, for example, because there aren't enough sells to sustain that, it will also affect seriously the consoles development and future. Side effects like these, bring always unpredictable consequences.
I'd like to have read that article, Flyby PC, about the modern phenomenon of games. I read a lot about video games history, it's an interesting matter for me.