Subject: Re: I Grok Schlock
IOW, the "food desert" is a symptom of people's food purchasing habits in an area, not the cause of it - supermarkets can't survive in those areas because their customers won't buy the mix of products that a supermarket provides, not the other way around.

"Food deserts" are also driven by shoplifting and the fact that store owners can't keep them profitable, even if they're the only store around.