Absolutely timely and in all truth, inevitable. With transparency and world-wideness, we're all essentially collaborating even if we don't mean to.
We're going to need to be less "me, mine", but still remain individuals with particular views/skills. In coopetition, we are compelled to share access to clients that we think we'd like to have "to ourselves", but we know that's a route that is not sustainable, nor is it realistic.
However, we do indeed have skills within our fields that can never be truly co-opted or copied. The more you know about your own skillsets and goals, the more you can easily distinguish yourself from others in the field, even if you are working right next to them, attracting the exact same customer base.
I think we should all continuously work on identifying and elaborating on our individual skills and direction. Then, using your very pithy guide in the essay above, get together and collaborate with folks doing similar work, cross-train with them, help them as you help yourself.
Tully's puts a cafe next to Starbuck's...they both benefit. They offer different stuff despite the fact that they are both in the "coffee" business.
Great article, Lisa, and I would even hazard a guess that the word "coopetition" will eventually be added to Webster's...