Amazon has released its first-cut finalists for its HQ2 — sorry, Anchorage — and if some activists have their way, there might one day also be an HQ3, HQ4, and HQ5 for all sorts of mini-Amazons. Slicing and dicing America's tech giants into separate pieces is the hot idea on the left (and increasingly on the right) to make America more innovative, more equal, and more democratic. It's not just Amazon either.