The six wealthiest people in the world collectively lost $130 billion on Thursday as tech sector stocks tumbled on renewed fears about the return on investment for the hundreds of billions of dollars companies are pouring into AI infrastructure. Key factsElon Musk, Jeff Bezos, Larry Page, Sergey Brin, Michael Dell and Mark Zuckerberg lost the combined 12-figure sum as Tesla, SpaceX, Amazon, Google, Dell and Meta shar