You could tell it about any efficient business. If there's no Wallmart in town and all that profit goes to small store owners then everytime they shop outside of town or go on a vacation they "suck" the profit out of the town.
Each time a customer needs to travel to big city or order remotely because town shops don't carry what they need they suck profit out of town.
If Wallmart can come to town and employ enough people it might help keep profit in town rather than suck it out.
I think this is blissfully ignorant. Walmart's model is built on creating prices and selection that are so attractive that it is very difficult to compete. Part of the way they do that is by extracting profits out and leaving only low paid employees locally.
Thank you