Capitalism benefits the cheapest most worthless money grubbing losers. Bezos has spaceships to build so the price cant go too low. (Just in case our world becomes a nuclear holocaust bezos and his rival buddy musk can go play on mars) 
Walmart will always claim to be the cheapest and thats what you get. (Kroger products are even cheaper than walmarts name brands)
At least you can get insurance if you work at king soopers.
Does the soul shrivel up after the first billion?
Just ask our royal leader.