This is probably one thing the Chinese get right in terms of economics. Banning speculative and worthless commodities. It does nobody any good because we all know it's just a speculative market. The few who get out in time make a profit while the many that don't almost become destitute because of it. It doesn't promote tangible benefits to anyone. Nobody has a skill, nothing of value is transferred, simply money changing hands because someone else deems a worthless commodity is more valuable than it is.