Whoa...!
This is not something I often say, but "I just got chills!"
That would be absolutely huge, although I'm curious to see if Wikipedia will insist on "doing it themselves" or partnering with someone outside the organization... there's a reason the world's 5th busiest web site is run by only 100 people, much of which centers on a "bare-bones we do it ourselves, our way" attitude. And yet? It's all user-generated content, just like Steemit... so it certainly makes sense on a conceptual level.
So are you up for making the pitch to Jimmy Wales & co?
I would make the pitch to anyone. Wikipedia could start sending their stuff to Steemit tomorrow and proof would be known within days. You wouldn't need a pitch. Stephen