Perhaps not 50 years. Still, we can't entirely dismiss the possibility that within a century or so the entire Western world will have turned into an amoral libertarian dystopia - in which case legal cocaine will be the least of our problems.
Ever read Snow Crash?
No, but it sounds like a lot of fun. The mere fact that it features a corporation created from the merger of the CIA and the Library of Congress clearly makes it worth reading!
What I had in mind was slightly more grounded, along the lines of
this essay, but the general idea is there.