Subsidizing giant Chinese webshops over local vendors and supporting unsustainable consumption of single-use plastic garbage is not exactly the sort of public service that governments are supposed to provide.

And that's exactly how we use USPS to subsidize amazon. Or did for a long time, anyway.

To be clear, this is the smart thing to do—package delivery SHOULD be subsidized. Amazon should pay into this disproportionately through taxes, though.

On the other hand, subsidies do cause actors to make otherwise unsustainable decisions. In this case, excessive consumerism.