Purposeful ignorance is a part of it. But who will be the victim who will be assigned to remain in ignorance.

Someone designs a car but he is in a world where horses and donkeys are the means of transportation. He has to convince people that horses are a problem. They will have an easier time if they kill their horses, extract their money from the bank and purchase the cars.

Then he has to explain to them that the working of the car is his problem. They do not need to understand how the car operates because he will do the repairs at their expense.

They should only learn how to use the car, not to repair nor maintain it.

That is how money is made.