Forget ideas, just normal worker mobility. A couple of years ago I switched jobs.

The old company had gotten bought by a conglomerate and they were milking the product line by stopping development, stopping raises, and letting attrition do its thing. Time to leave. One of my peers found a great company still investing in their products and jumped ship. Me too. However we both had noncompetes specifically prohibiting “poaching”, so could we even talk to co-workers? Everyone lost because of this noncompete. New company missed out on potential new hires, co-workers missed a potential opportunity, and even old company attrited slower than otherwise so less profit

This is a classic case of noncompetes blocking worker mobility, hurting everyone