[flagged]
I think there is a good point in there which is ignored because this is some sort of Chinese propaganda, instead of someone with life-experience in the USA.
If you have a cellphone, how many sites do you check prices on past Walmart, Target, Amazon with niche exceptions (like BestBuy)? Effectively there are only a few companies that are controlling prices for US consumer goods. In many cases, the ONLY pricecheck is Amazon. This is a problem that will only get worse.
What on earth are you talking about? Americans have many choices for shopping and restaurants.