This is on top of them covering passes and encouraging employees to live closer to work, and just reflects on low quality of Bay Area's of transportation grid.
If Muni, or SAM or VTA ran buses from SOMA/Mission to corporate campuses, those would definitely be used. But after a three-hour one-way commute that involves Muni+BART+Caltrain+city bus (an example would be a Google employee in Mountain View who lives in the Mission) even a die-hard public transport fan would switch to a company bus.
Compare with Seattle, by the way, which just has a Sound Transit stop right on the Microsoft campus, easily accessible from Belltown and Cap Hill. If there's one thing that frustrated me moving from Microsoft to Google, it's the sudden decrease in the quality of inter-city public transit.
Moreover, if public transit to/from SF weren't such a fucking joke, more young techies would choose to live outside the city, knowing they could go in whenever they wanted to.
If Muni, or SAM or VTA ran buses from SOMA/Mission to corporate campuses, those would definitely be used. But after a three-hour one-way commute that involves Muni+BART+Caltrain+city bus (an example would be a Google employee in Mountain View who lives in the Mission) even a die-hard public transport fan would switch to a company bus.