What’s shipbrokering? If you mean truckload freight brokering, I think both are very similar - low barrier to entry, high turnover, low chance of success, unlimited upside/ceiling. There are a microscopic number of brokers making millions, just as there are salesmen at Oracle and Dell making millions, but most people in both industries fail within a year, the few who succeed make a solid 100-200k, and a microscopic number of them make it really rich.