Where's the harm for consumers here? All I see is that I can now buy guitar pedals for a fraction of the price. Isn't consumer harm the point of anti trust?
How many companies will not enter the market because of Amazon's monopoly? How many products will never get invented because of the awareness of the system?
And even with this, with a monopoly it is not a race to the bottom. Once the monopoly is in place, you can raise the costs to whatever you want and the market has no choice but to grin and bear it or go without.
