There's lots of companies already doing this. Every morning in SF you have hundreds of buses filling with young folks commuting to work down at Apple or Google

There's lots of companies already doing this. Every morning in SF you have hundreds of buses filling with young folks commuting to work down at Apple or Google or Facebook. Uniformly, the age range on the bus is 22-35. The larger tech companies aren't moving to SF any time soon. Too many of their execs and employees want to live in houses, and there just isn't space in SF for campuses that will hold ~10,000 employees, nor many skyscrapers available, either. Plus there are still prohibitive tax issues to being in SF, unless (like Twitter) the city cuts you a break.