All the old systems had no channel at all for profit making, so it made it's own in the form of spam and similar.
The reason that former communist countries like Russia became oligarchies (what I think you might mean by mafia state) is because people with significant power in the previous communist system seized control of huge state assets during the disorder that accompanied the system's collapse, and in doing so took ownership of large pieces of the economy. Even under communism, power was closely held among a in-group, and that stayed the same afterward.
The oligarchy didn't emerge because average people were bored and provided for, didn't know what to do with themselves, and therefore decided to set up illegitimate enterprises.
Also, plenty of people in capitalist countries set up illegitimate enterprises like financial frauds and consumer scams of all sorts (remember 2008?), and capitalist societies have their own oligarchs - though we call them plutocrats instead.