Should we allow Walmart to setup shop?

Walmart is one of the most efficient stores in the world . Their supply chain management is so efficient that they can keep their overheads low and pass on the savings to the consumer. Secondly they are able to pressure the suppliers to provide goods at the lowest possible price just because of their size. This is good for the consumer in general but the other side of it is that small businesses can no more compete with Walmart .

I shop at Walmart in the US . As a consumer I am a happy camper but if I were a business owner I would hate Walmart. Wherever Walmart opens shop, in the following few months all the small businesses in that area start going out of business. In the U.S there are so many cities where they don't want Walmart to setup shop .

Should we let Walmart in ?