Walmart heir Rob Walton has just retired from the retailer’s board after four decades. He and his two siblings are worth a combined $228 billion – more than Jeff Bezos or Elon Musk.
Jim Walton, Alice Walton and Rob Walton.REUTERS/Rick Wilking Walmart heir Rob Walton has just resigned from the retailer’s board after four decades. He and his two siblings have increased their…