I'm in a similar position, just getting ready to launch a product and here is my take on it:
I've read the biography on Steve Jobs and found it very puzzling that such an intelligent fellow got so hung up on people copying his innovations. I know that are a million arguments for the other side, but every true innovator knows they are doing something to benefit humanity at large. It might sound over-the-top, but when you work to make the world a better place, the work you do is meant for everyone to benefit from. The lingering fear is that someone will take advantage of your idea and make money and exploit something that they really did not work for. But I think open hardware (and software) offers a solution. It's a new model, a new paradigm, and that means we, who know the old system have the duty to make the transition work. I'm serious. I believe that in 50 years or so, everything will be open, because the model is simply better. Open hardware sounds pretty futuristic to me.
The open hardware movement basically keeps all the greedy investors very far away. It's too risky, for them. But for those willing to work things out, get their hands dirty, and create, open hardware means uncapped potential to create new things, using the resource of combined knowledge and expertise. The old economic systems are falling apart because the people with the money are not the actual people who make things. Open hardware, for me means that I add my knowledge to a community of creators who keep multiplying the energy and innovation.
There is probably a license that will keep copycat projects from springing up while at the same time encouraging people to innovate. For me, It's not so much about preventing people from making money from it, as it is about keeping someone from just ripping it off. If someone wants to add their bag of tricks to what I made and sell it, how is that any different from what I have done? I mean, without the prototyping boards, it would have taken at least another year of research to get to market.
I think we are in a new position, because the underlying models of business and innovation are shifting, and yes, it's a big hairy mess of a thing to figure out, but that is why we love it.
I think when you really innovate, you create something in your own way, and that's what attracts people. It's not actually about the mechanics, but the sale is made based on your unique angle or approach. Another perspective is that a copy only opens public to the awareness of your product. If you can prove that your's is the best, you have made the sale and used the copier as a marketing tool.
-Noah