These auxiliary professionals are no different from their legitimate counterparts, only the clientele and products vary. This is the real infrastructure of crime, and as with more mundane occupations, human capital is what counts. Money is stashed away in banking havens all over the globe. Money is extremely mobile and virtually untraceable. This money, having cooled off in due time, is reinvested in legitimate activities.
Crime is a major engine of economic growth in some countries - in Italy and Russia, for example.
In many places, criminals are the only ones who enjoy any liquidity at all, while other more visible sectors of the economy are flounder in the financial drought of a demonetised economy. People and governments tend to lose both their scruples and their sense of honour in these unhappy circumstances. They welcome any kind of money that may ensure their survival. This is where crime comes in. In Central and Eastern Europe this process was code-named privatisation.