Oh, don't be absurd. Customers obviously don't actually want this. Amazon is a monopoly—not in the sense of "is literally the only vendor", but "is considered the default by at least a plurality of Americans"—and has the money and the clout to just keep doing what they're doing even if it's creating friction, frustration, and money loss to some customers.

You seem to be mistaking the theory of an ideal free market with the messy reality of markets with incomplete and asymmetric information, high price sensitivity, and a lack of time and mental energy to shop around and otherwise gain more information and other options.