And at a certain point it's consumerism that's driving all of this. I don't know if it's fair to blame Amazon for this any more than it is to blame McDonalds for obesity. We live in a society where people are free to make their own choices, and as long as these "hidden costs" aren't well regulated, a lot of people will take a cheeseburger at the cost of a few extra pounds, and some 2-day shipped plastic junk at the expense of some poor over-worked employee's vacation.
Meanwhile, these consumers are putting additional strain on the healthcare system, and encouraging companies like Amazon to get away with all of its labor abuses.