Once, years ago in the first flush of internet hope, a writer I knew was asked—these were heady times—if Silicon Valley would be the center of the universe for all the foreseeable future. “Athens fell,” the writer, Alan Deutschman, said without missing a beat. “And Rome fell. And Palo Alto will fall, too.” The line came back to me this week as the stock price of Meta, Facebook’s parent, did an unprecedented nosedive. Is this the end of Facebook? I don’t think so. I suspect that Facebook’s namesake “blue app” will fade, while Instagram will recover from the stumble. There is a good chance that Meta will recover in some way—though I would guess that the way forward will not be through Mark Zuckerberg’s beloved metaverse, which has all the…