Some 20-somethings flocking to SF to build trillion-dollar AI startups say no to booze, sleep, and fun as they strive to be, or appear to be, the most obsessed (Wall Street Journal)

Wall Street Journal:
Some 20-somethings flocking to SF to build trillion-dollar AI startups say no to booze, sleep, and fun as they strive to be, or appear to be, the most obsessed  —  To reach the dream of creating a trillion-dollar company, the 20-somethings flocking to San Francisco give up everything but their laptops