Open Robotics - Legal Immunity for open robotic platforms
blog.law.cornell.edu
blog.law.cornell.edu
Although I think the argument is a little flawed - it's basically along the lines of "if it's open, you'll be able to customise it yourself". Assuming you know how, or have the capability to learn how.
Even if they start completely open, one can't help but feel the robot manufacturers move towards closed systems just because it's just a size-of-market type issue. Kind of like if the auto manufacturers were only interested in selling to people who were mechanics, and thus designed open engines and cars... wouldn't be long before someone figured out a more viable business model would be to close the system if it meant they could then sell to anyone (not necessarily saying that i think that, just saying many people would).
Hopefully I think we look to 3D printing to see the future of hardware. The Thing-o-Matic, a more commercial offering, coming originally from the pure hobbyist/academic RepRap - open hardware. And it follows that the Thing-o-Matic is open hardware too - licensing.