Equity markets aren't blind to the potential profit in robotics, but their vision is obscured by two concerns as old as the industry itself.
The first is the industry's history of over-promising -- although robotics executives would say unrealistic expectations are more to blame. Either way, it has been hard to meet fictional depictions of robotics as thrilling, human-like machines.
This issue is fading because robotics is starting to match people's expectations.
The second concern is more su...