Or that it is proving too difficult to achieve what it is believed the market wants. Hundreds of prototypes whizzing around, Zano sold 700 and then stopped, dozens of potential selfie-tye drones, but no-one can seem to get it to market. Not a marketing problem, so don't expect any magic from Duffell or Kantor, it's up to the back room boys to get the algos working properly.
