Yeah but that's friends of the emperor, not organized crime (although granted, the distinction between these two groups is getting smaller by the day).

Organized crime? That money is literally everywhere. Restaurants, real estate, cars, the stock markets... the only place you'll rarely spot it is, ironically, gambling, way too many chances of getting caught on a paper trail. A lot of it is also invested in art pieces stored in one tax haven/freeport or another, really easy to launder money or evade taxes.