But Amazon has explicitly chosen to keep its margins tight, and aggressively invest for expansion. In a sense they choose not to make huge profits. They're famo

But Amazon has explicitly chosen to keep its margins tight, and aggressively invest for expansion. In a sense they choose not to make huge profits. They're famous for it! I still don't buy your general point. It's true that some large companies have run into trouble because they were afraid of damaging their core product. But that's a risk everyone's aware of now -- the whole "innovator's dilemma" thing. What's an example of a large successful company that was thereby prevented from spreading out? I don't mean companies that failed due to complacency, or overly rigid business practices, but where their size actually worked against them. (Hmm, possibly we really mean the same thing, we're just describing it in different ways...)