Actually, Martin, I can take you to a couple of abandoned Walmarts that were opened and closed within the last six years not far from the place I used to live North of Philadelphia--I remember the zoning adjustments and the local political fighting, including massive public concern at the traffic problems that the traffic lights and access roads would(and did) cause--

Walmarts are very vulnerable to certain sorts of competition, and oddly enough, often end up becoming their own competitors--If you care, there are some "guerilla" marketing strategies that can grease a Walmart pretty quickly--the only thing is that it doesn't have anything to do with organic co-ops or such things--

My problems with Walmart have to do with the fact that, A) though once they were a good employer, they seem to have become fairly despicable, B) Their stores are increasingly depressing and filthy, and C) their merchandise gets worse and worse (a result of their policy of forcing their suppliers to reduce prices every year)--

I actually like megastores, having grown up surrounded by Meijer's Thrifty Acres--though I don't think that they should be used to replace scenery--

The great anarchist visionary, Michael Kropotin, essentially predicted megastores, and the mass produced, low cost merchandise that fills them--they offer the working classes goods once only available to the aristocracy--and they represent an economy that is focussed on serving the classes that sustain it--