Maybe not someone in a garage, but Alibaba and Tenecent are coming up behind them, and once they set up fulfillment centers in the States (to solve the fast shipping), Amazon may lose a lot of ground very quickly.

Also ebay and Walmart are hardly unknown, and as people get more fed up with the fakes on Amazon, they know where to look.

Incidentally, I kinda prefer to shop at Alibaba where I know it will be fake then on Amazon or Walmart where I can fall into the trip of thinking it is real (because it might be...).