In a frenzy unseen since the birth of social media in the early 2000s, investors are pouring billions into generative AI and fueling a startup boom in San Francisco. But the rapid growth of the artificial-intelligence business may not be a panacea for the city's economic and commercial real-estate woes, according to a dozen tech industry professionals interviewed by Reuters. Unlike past tech booms that have touched San Francisco, the generative AI craze brings fewer jobs, because AI firms excel at staying lean and automating work.