A public feud with private consequences, Trump vs Musk: The Billionaire Feud That’s Shaking Politics and Business. In an extraordinary collapse of what was once a powerful alliance, U.S. President Donald Trump and billionaire entrepreneur Elon Musk are now embroiled in a deeply personal and political feud. Their highly public breakup has exploded across digital platforms, dragged federal contracts and tech stocks into the fray, and revealed just how fragile American democratic institutions can be when billionaire egos clash.