Their interior could use a better design. However, the vast majority of people are working class. Their problems aren't shoppers' opinions of other shoppers. An upscale version might attract other customers of a higher socioeconomic status, but there's lots of competition in that market as well, and it's not a core competency of Walmart, making it a longshot bet.

Based on what the article says from the memo, a lot if their issues stem from changing shopping behaviors and a desire for more convenience-- such as curbside pickup-- that Walmart has had difficulty scaling up fast enough to meet demand.