I suspect the rewards of an academic career are not on par with or even close to those of a career on the commercial path. The cost of tuition is prohibitive for most families and the rewards of a teaching/research career are mediocre at best compared to one in on a commercial track.

As well most schools have incentives to place students in commercial careers. It's what parents and students expect these days from an educational institution.

Finally it's extremely easy to get started and learn enough programming to be dangerous and difficult to learn enough to produce real innovation.