The problem arises when you ask yourself the question: "Where does this customer education stops?". Of course it is better to have a public competent in buying

The problem arises when you ask yourself the question: "Where does this customer education stops?". Of course it is better to have a public competent in buying insurance, food, housing, financial products, health treatments, etc... But you are requiring to put an amount of knowledge into every head that simply cannot fit. It's much better to train the specialized provider, because then each head has only to fit the knowledge required for their own profession. This is feasible and with much less effort. Slightly worse result, but there's no free lunch.