Robots are not part of their business model. Robots are a tool to help them minimize labor costs, which virtually every company on this planet attempts to do.
Your problem is that you see robots running around a warehouse and you say "Oh, they move like people, so they're kinda like people-replacements. Those evil bastards!" I'll bet you don't say that when you look at a conveyor belt or a box sealer or a fork lift or a computer terminal .... or any of a million other labor-saving inventions that have benefited manufacturing and distribution over the past 200 years.
Actually I didn't watch the video (blocked at work). I'm only assuming what it is based on previous "60 minutes" stories about it.
My problem isn't the robots, though. It's the fact that Amazon is ok with losing money every year developing ways to reduce cost. "Investment mode" they call it. They undercut to the point of taking a loss, because they know all customers really want is the lowest (tax-free) cost. The only way to turn a profit is to lower operational costs. Eventually they have to start turning a profit, and in their best interests it would be right after they've eliminated all of their competition.
I've just got grim hopes for the future with a company that can do this, losing half a billion dollars every quarter. I would not be surprised if they continue until ALL competition is elimiated, they become a conglomerate, eating up B&Ms, UPS, Netflix/HULU, etc and then raise rates for their subscriptions, all the while we continue to praise them for the super deals and free shipping*.
*with subscription