Many (maybe even most) "robots" one comes across tend to be built with the primary purpose of obtaining a degree (MS, PhD, etc). Once they've served that purpose, development tends to stop.
I think that to make a great product, you have to stop thinking of it as a "robot", but instead think about what problem needs solved - what the potential customer wants. One owner of a drill company was purported to tell his sales force - "We don't sell drills, we sell holes." Stop getting all caught up in the bells and whistles of your product that no one really cares about and get inside the head of your customer and solve their problem. Then you have something that people must have.
Roomba sells not because it is a robot vacuum cleaner, but because it's a hands off vacuum cleaner that happens to be a robot. We have one and, contrary to some reports, it works great. No, it doesn't compare to our Dyson Animal, but turn it loose in the family room and it does an adequate job, all by itself, and finds the charger and turns itself off when it's done. It's effective in that we just bring out the Dyson less frequently for deep cleaning.
The really great "robots" may not be considered robots at all by many. Dishwashers and clothes washers. But the idea is the same - it's a machine that saves time and effort so you can do something else that you'd rather be doing. That's the killer app for automation.
But for purveyers of automation, it's really hard to compete with human labor as MLW's $400k security guard can attest. How about a robotic grocery shelf stocking robot - a potentially huge market to stock the shelves of stores around the world? But there's just no way a machine can compete with a high school kid working part time for a few dollars an hour.
The bane of automation is lack of environmental controls - which is pretty much the definition of the "real world."
So perhaps most "robots" are built to satisfy the creative outlet of tinkerers. Or to produce a degree. Or both.
Yep. And where it's not saturated, the killer app just hasn't yet been invented.
What we need are some practical, low cost super conductors. Something as easy to buy and use as a spool of regular copper wire. That and about a 10-fold improvement in battery/power technology. What a boon to invention / engineering that would be.
-Brian