Most products are extremely complicated. Food and its effects are extraordinarily complicated, but general knowledge about what foods to eat to stay healthy diffuses through an emergent and bottom-up process, through channels like Wikipedia and word-of-mouth.

Cars are another extremely complicated product. Society has self-organized to create reputable sources of information on the quality of different models.

We don't need government restrictions and monopolization of spending to manage the complexity of the economy. Healthcare faces severe problems because of governemnt intervention, not despite of it.