Please forgive my ignorance, but what possible intersection is there between blockchains (method of immutably storing small quantities of data in a distributed fashion currently limited by power waste, slowness, and needed storage amount) and providing real data about real stock markets to real people (getting data with proper license and providing it to others on request, currently limited by legal means)?

Coin exchanges are dealing with plenty of real money for plenty of real people and have real licenses and very real government oversight (at least in places like the US and EU) , so your snark is not very appropriate.

Regarding your actual point, I can't see the connection either.

Bitcoin futures on CME, coming soon. http://www.cmegroup.com/media-room/press-releases/2017/10/31...

If people not liking an idea means they don't like all ideas, how do you identify your bad ideas?