Amazon Web Service is bigger than Walmart, not Amazon retail. Let's be clear which part of Amazon is what is more valuable and the future. If your friend is out of business because cabinets can be sold online it is not Amazon failing it, it is the rest of the cabinet businesses. Your friend could have been put out of business by Home Depot or HD Supply or any Russian or Vietnamese cabinet manufacturers.
So tell me, why is Home Depot not evil but Amazon (selling cabinets) is? Why not Ikea? They are the #1 kitchen vendor in the US.
Delivery fee for groceries like milk, is probably about $20 per trip. You think this is the future and will put Walmart out of business?