Costco and Walmart have different business models with respect to employees. Wal Mart has lower wages and higher turnover. Costco is unionised and has higher wages and lower turnover. I won’t say why one is good or one is bad. The bottom line is what each hs aspects that draw conumers to their stores. If they are unsuccessful in their approach they will have to shut their doors. At this point itseems like their is a demand for each of their services.