The root cause here is organizational failure from disempowered employees. At one point Amazon had great customer service with empowered represenatives. That's not Amazon today.
It can be if that's the side effect of a system designed to make selling as frictionless (and therefore lucrative) as possible. Thence, greed could be the root cause, if not the proximate cause.
Depends entirely on how much the sellers are selling. It’s entirely possible they like the idea of making a ton of sales for a bit. It’s not their reputation that gets destroyed.
Anyone expecting any other behavior from utility maximizing entities is naive?
