I'm no WalMart fan; in fact, I've resisted ever setting foot in a WalMart - mostly because of their poor record will WalMart employees. WalMart is making some positive changes, and may eventually begin to help their employees gain parity. This is a "PC" issue.
So, here's a hypothetical. Would you ever accept a WalMart in Palo Alto? This would probably be a store targeted at the consumer electronics market, or possibly higher end clothing. It looks like they're going to target the upscale demographic, with small stores, and very specific ad placements.
Palo Alto needs sales tax dollars.
Is this something you would consider? If not, why not?