There will never be a movie about Silk Road, period.
Actually, you do have one.
And I am sure there will be many more to be made.
http://www.imdb.com/title/tt3312868/
That one was a very small-budget documentary type movie. This movie was never released on the movie theaters within the United States and the near abroad. I was talking about Hollywood-scale movies, such as The Wolf of Wall Street, The Two Mr. Kissels and The Great Impostor (starring Tony Curtis & Frank Gorshin).
So a movie is only a movie if its a big-budget and made by hollywood and released in the cinemas? And you're very wrong about a Silk Road movie. One is already in the works written by Dennis Lehane http://www.imdb.com/title/tt3271820/?ref_=nm_dev_4
I'm really interested to see how it works though. A movie set purely in the deep web or with a guy sat at his laptop sure could be boring. I just hope they don't add loads of fake drama and a love interest for Ross or something lol.