I think the call for top-down policy makes sense b/c otherwise this is like every other tragedy of the commons situation. Each of those top-level researchers also has to think, "my department has junior faculty trying to build their publications list for tenure, we have post-docs and grad-students trying to get a high-impact publication to help them land a faculty job, we have research program X which is kind of in a race with a program at that other school lower down in the top 20. If we close off opportunities with the top journals, we put all of those at a competitive disadvantage."