How is it an antitrust case? Amazon doesn't have a monopoly on hosting internet services. And there is no oligopoly for this line of business, there are many thousands of suitable providers worldwide.
It would be different if, say, CenturyLink were blocking content across their transit infrastructure. That would be more like your railroad analogy.
It would be different if, say, CenturyLink were blocking content across their transit infrastructure. That would be more like your railroad analogy.