The Lily Camera, a throw-and-shoot camera, is displayed during CES Unveiled at the 2016 Consumer... [+] Electronics Show in Las Vegas in Jan. 2016. (Photo: David Paul Morris/Bloomberg) By Ryan Mac and Aaron Tilley On Dec. 20, Lily Robotics was up against a wall. It was five days before Christmas, and dozens of eager customers who had spent more than $499 to pre-order the company’s flagship product