The pronlem there is that the Console Market is currently taking advantage of the last technology. Both software and hardware wise.
However when it comes do PC, the game devs need to keep in mind what computer specs people have been using for the last few years. And with that in mind, they will dumb down the system requirements for those people with slower / lower machines.
Otherwise, if a lot of people can not play the latest game, then a lot of people will not buy it. And there for the software dev is at a lose.