https://www.buzzfeednews.com/article/kenbensinger/amazon-is-severing-contracts-with-delivery-firms-linked-to

Basically, contracting equals fraud. Contracting equals diminished quality, diminished product, diminished customer service, diminished satisfaction, diminished lifespan, diminished value, diminished society. Society is diminished by the institution of contracted labor. Fuck contracting. It’s a way to cover your ass at the expense of workers, i.e., people who actually do work in the world as opposed to sitting on piles of money and making phone calls and pushing buttons. Contracting is a way for cowards, ignoramuses, and the lazy and recalcitrant to avoid responsibility and legal liability.