To be fair, it's a systemic problem with the economic system - it's always a race for more efficiency which often comes at the legal limit (or even worse) of exploitation. It's very hard to solve systemic problems through individual choices - unless that choice comes from very high up (ie; the working conditions at Etsy before it went public).

About the only bright part of Amazon at this point is that they clearly hope to eliminate these jobs entirely through automation - of course then we have the social issue to deal with of how we make sure the benefits of automation transfer to society as a whole and not just the shareholders of Amazon.