I believe that in the late 80's, two of the richest were a Colombian coke lord and a Japanese rail and real estate magnate. It's entirely possible that someone

I believe that in the late 80's, two of the richest were a Colombian coke lord and a Japanese rail and real estate magnate. It's entirely possible that someone out there has quietly bought up a huge fraction of the rentable real estate in Shanghai or Hong Kong, for example, but doesn't want to disclose it. It's similarly possible that someone in Vietnam has stockpiled billions of dollars worth of heroin. Unlikely, of course.