This is still the spirit of collusion, and is prone to defectors. There should be large incentives for one company to leave the cartel, make a simple service, a

This is still the spirit of collusion, and is prone to defectors. There should be large incentives for one company to leave the cartel, make a simple service, and sell it at the same price of their competitors. They would save money by reducing their own internal complexity, and would gain money by winning over customers.