Walmart can no longer meet Wall Street's infinite growth expectations, so the stock is tanking...
"These wages are wholly unaffordable! How can we compete with profit-less Amazon if we have to pay people?"
Amazon however, doesn't have any stores or employees, so Wall Street is willing to accord that stock a higher valuation (market capitalization) while they are in competition destroying mode:
Is there a problem with this "system?"? I can't tell.
Let's wait and see how it all turns out.
This is all what's known as an "experiment". Someone had to prove it wouldn't work.
And there were just enough self-bankrupting tools around to do it.