Crime doesn’t pay. If you look up earnings of US mafia members you’ll find that your average organisation has few people on top making ton of money they are just sitting on because its dirty money they can’t easily launder or spend, with under-bosses making middle-class money and everybody else scrapping by, with their possesions being in illiquid assets that are hard to turn into cash in time of need like stolen goods (electronics, clothes, cars etc. ect,) or property shares.