"Extending one's market power," to use the legal phrase, makes sense for that business (and profits), it's just illegal; tolerating it as it destroys a wide swa

"Extending one's market power," to use the legal phrase, makes sense for that business (and profits), it's just illegal; tolerating it as it destroys a wide swatch of a previously competitive marketplace makes no sense. Traditionally, vertical integration has been a tolerated exception, but that doesn't match what Amazon is doing.