[Vespasian]

I assume Amazon pushes down wages accordingly and is happy that the public subsidizes their margins.

Why would they give someone more because they come to them with no alternative and under pressure from the government to take any Job.

[astrange]

No, wages are set by negotiating with workers; Amazon is not purely a price setter of wages. That means giving workers money lets them get better wages. (They would be one if they were a monopsony though. But mostly they aren't.)

> under pressure from the government to take any Job.

Work requirements for welfare can indeed hurt workers this way by making them take worse jobs.