@wesg: I really liked your OR post.
I think both your ideas can have a lot of impact. If you start doing data for good competitions or challenges, please notify me, I think there are lots of computer science, industrial engineers and data science student in my area in Germany, that would like to participate in such competitions (at universities in Karlsruhe, Mannheim, Heidelberg and Darmstadt).
I think it is actually great that different orgs start out on the same idea. This way, they can make experiences in parallel and share their experience to later specialize, merge or simply complement each other.
P.S.: I hear of all the orgs mentioned today for the first time, maybe someone should create a doc or something so they can be found / find each other and coordinate with the other orgs.