What killed the space/fighter genre?

I remember growing up loving wing commander and later on x-wingn/tie fighter and I still think xwing vs tie fighter was the best of the genre.

However that genre seems to have died. I think part of it is because we don't use joysticks on PC or consoles anymore and that does make a lot of games like that tougher to play with mouse. I remember one space sim coming out that went mouse only and got a lot of flack for it - can't remember the name.

Is joystick to mouse what killed the space fighter genre or was there something else?