This. They are also so good at building malls that they own the construction company and the supply chain of raw goods for the construction efforts (AWS). They

This. They are also so good at building malls that they own the construction company and the supply chain of raw goods for the construction efforts (AWS). They use their scale to cut costs for construction globally so it doesn't make economic sense for others to build without them. Even some of their competitors use their construction company to build their vision of what a mall looks like. All the while Amazon is gaining valuable insights they can steal to use on their own malls.