There is another unfair competitive advantage that Amazon had for many years, which lead directly to this situation: no profit expectations from its shareholder

There is another unfair competitive advantage that Amazon had for many years, which lead directly to this situation: no profit expectations from its shareholders. Amazon chose not to earn the normal profits that most businesses need to survive and grow in order to offer unrealistically low prices on all sorts of products specifically in order to gain this advantage. They didn't just happen to gain the market dominance that allows for this sort of anti-competitive abuse, they bought it by convincing shareholders not to punish them for choosing not to earn a profit.