"Historically, Silicon Valley has been the center of gravity for tech and startups but I think more and more, these types of companies can be built anywhere," says Erik Rannala, who moved from San Francisco to Los Angeles with his entrepreneurial partner William Hsu several years ago. Social media software maker Epoxy TV, founded by Juan Bruce and Jason Ahmad, is located in a Venice complex formerly owned by the late actor Dennis Hopper. What's happening here is part of a growing movement of U.S.