Cinebase Inc., which makes digital media management software, was founded in Los Angeles. But in 1996, two years after starting up, the company was forced to open an office in Redwood City, about 30 miles south of San Francisco.

The reason? Experienced Silicon Valley engineers refused to move to Southern California, leaving the company with no choice but to open a Bay Area satellite office. Since then, however, there’s been a geographic shift. Cinebase’s L.A. office has nearly doubled in size during the last three years while Redwood City’s growth has been static, and that’s just the tip of the trend.