[klingonopera]

The arguments for ways other companies are better work both in and out of favor for them. Conversely, centralizing it (Amazon becomes a monopoly) also works both ways: It's possible worker conditions can be better or worse compared to the average standard, but with greater number of them in a single go.

Thus the counter-argument, for me at least, stands out, which is less volatility from a decentralized market, however, if a centralized market would turn out to have better employee conditions, then this reduced volatility would in turn work against other companies as an argument, and so we're back at square one.

History tells us that monopolies tend to ...treat their employees badly? I don't know and I think it depends on the company and market it serves, but my gut-feeling says yes and so, to me, less volatility sounds like the sanest gut-decision I can make.

It's up to each and everyone for themselves to decide, I guess.