This theory just does not hold up in the real world. Walk onto the first floor of any department store and note it is almost entirely filled with cosmetic counters. Likewise note the health and nutritional section of every major supermarket chain. As long as you see these departments, you will know there is plenty of markets for network marketers. The distributors are the ones buying most of the products.
Many people confuse the two.
They are kissing cousins in design but not in operation. The difference is a difference that makes a difference. Practicing Professional Integrity Selling will keep you out of trouble. This type of selling is fulfilling needs and wants. There is no trickery involved.