Or, perhaps more to the point, things that people don't yet want, because they're too new and too alpha. Or things that you don't know how long it will take to produce a product with, but which will definitely one day be useful and people will want them. Robots fall into most of these categories at the moment. I don't doubt that one day people will want tons of them, just like what happened with computers, but I don't think the technology is there yet for an Apple-for-robotics to jump in and succeed as a for-profit company. I hope I'm wrong, and if I'm wrong I hope to be part of what proves me wrong, but that's what I think at the moment.
