Mark Zuckerberg, CEO of Meta testifies before the Senate Judiciary Committee at the Dirksen Senate Office Building on January 31, 2024 in Washington, DC.Alex Wong | Getty ImagesMark Zuckerberg started Meta's earnings call by talking about artificial intelligence. Then he moved onto the metaverse, touting his company's headsets, glasses and operating system. He spent almost the entirety of his opening remarks focused on the many ways Meta loses money.Investors weren't into it. Meta shares tumbled...