This isn't necessarily bad. From the government's point of view, Amazon is big enough and competent enough to do the engineering to get it right and has enough financial backing to deal with any liabilities should they come up. It may give UAVs more freedom to maneuver around built up areas when they find that crashing one doesn't end the world as we know it.
Although I'm not entirely sure I want a sky full of Amazon drones around with flashing adverts (which will come). Fortunately, where I live this isn't going to happen for a very long while.