Amazon is a poster child for antitrust litigation. They're publicly known for using their dominant position to compete with their suppliers, and drive their competitors out of business with price dumping. There is little chance you'll find alternatives to Amazon if they're allowed to destroy competition.

Regulation can only go so far, it can help build and stabilize a healthy ecosystem but it can't help with a fully consolidated business like with a decade of experience in killing competition.

There's a good case to be made that they should get the standard oil treatment.