Those third parties likely owe pretty much their entire business to amazon. When a company can't exist without a specific client, is it really a third party?
I think delivery companies may vary - in my area, some deliveries are still completed by the national mail, major couriers, however small (and often incompetent) carriers are starting to.
The reason for my comment was that my experience receiving a shiny package doesn't really overlap with what employees are being put through. Both reflect poorly on Amazon, the conversation about employees is a valid on it's own as there are avenues with Amazon to already complain about poor delivery and have a recourse.
