Everyone is talking about DoorDash (NASDAQ:DASH | DASH Price Prediction) again because a splashy Deliveroo deal, autonomous delivery hype, and a fresh AI narrative have analysts pounding the table on a stock that traded near $285 last summer. The underlying numbers tell a different story. The DoorDash story is a textbook case of revenue growth ... The Retirement Portfolio Case: Ditch the Delivery App, Buy the Railroad