Out of curiosity, I took a look at drone regs in the western world. What I noted immediately was that the US is an outlier. Most countries limit altitude to 120/150 meters for example.
Since the historical precedent with respect to aviation rules and regs is to harmonize, I predict that over the next 10 years or so we'll see drone flying in the US look a lot more like drone flying in other countries rather than "fly as you always have" rhetoric out of the AMA.