Not GP, but some critics say that it's unclear if Amazon makes money on free shipping or if it's a loss-leader that Amazon can afford due to its valuation. For

Not GP, but some critics say that it's unclear if Amazon makes money on free shipping or if it's a loss-leader that Amazon can afford due to its valuation. For the government, some are saying that the USPS isn't charging enough. And the USPS makes a loss. But other say otherwise : https://www.nytimes.com/2018/04/04/technology/amazon-postal-service-trump.html https://www.nytimes.com/2018/04/04/technology/amazon-postal-...