There is plenty of competition on that side. The bigger problems are that these people are uneducated and don't trust banks. They also frequently get part or al

There is plenty of competition on that side. The bigger problems are that these people are uneducated and don't trust banks. They also frequently get part or all of their income in ways that dissuade from from putting it in banks because they do not want to pay taxes on it or have to explain what illegal things they did to earn it.