[jacobolus]

Amazon is a monopsony with respect to its delivery subcontractors. They are not real independent businesses in a real market, but are wholly reliant on Amazon, using Amazon branding and with most aspects of their business dictated by Amazon. The only reason Amazon has set things up this way is because it (a) allows them to deliberately abuse their subcontractors’ workers in ways that would be unlawful if they directly employed them, and (b) shields them from various kinds of legal risks which they should be liable for.

Disclaimer: I am not an expert in Amazon’s delivery network or other business practices. You’d have to ask a labor lawyer for a full account.