What happens to a society where one class extracts payment from another class but the payment only flows in one direction and eventually the latter class doesn't have it, and outnumbers the former class?

What happens when a creative writer pens an influential treatise on economic and politics, but it turns out he was completely wrong on many key empirical aspects of human behaviour, leading to tens of millions of deaths, yet his followers will not see his failure and keep trying to turn over society to produce his false utopia?