I'm curious if multiple Walmarts in the same area have a compounding effect. I have 3 within the same distance from my apartment; a regular one that's the oldest one out here, a Neighborhood Market and a Supercenter.
I've also seen the Walmart I used to work at get shut down so they could build a Supercenter just 2 blocks away and I remember everyone I worked with acting like they were gonna keep their job and just move to the new store. They did not. Though I partially suspect that was mostly due to the fact that, that particular Walmart I worked at was the lowest rated Walmart in the state. Of course they wouldn't keep the employees from it.