I suspect the problem is that most people want to keep the option open of implementing their idea at some point in the future, even if they probably realize the

I suspect the problem is that most people want to keep the option open of implementing their idea at some point in the future, even if they probably realize they never will. Giving ideas away, knowing that others will come along, seems to be in line with believing the pie isn't finite, and I think most people are convinced the pie is finite.