As I am sure readers know all too well, that sort of thing is quietly prevalent in investment banks (well, except for being so indiscreet as to have your implements on view), as coke-snorting traders and institutional salesmen were sufficiently common in the 1980s so as to become a staple of fiction and magazine articles. Even in the seemingly innocent early 1980s, a member of Goldman’s corporate finance department was known to use uppers and downers on what was presumed to be a daily basis. He made partner. A attorney buddy realized how naive he was when on a deal, with all too great frequency, the room where negotiations were being held would empty itself. It took him a couple of days to figure out everyone else wasn’t making urgent phone calls, but repairing to bathrooms, and not to have sex with each other, either. I’ve also been told of very high level IT guys (the kind who built and ran mission critical systems, and made seven figures in the peak years) having meth habits. (Based on my very very limited anecdotal sample, meth does appear to live up to its billing and leads to much more rapid personal train wrecks than other stimulants).
And this is the world from which our current Treasury Sectary comes from.