Well... isn't it? I'm not sure I like the implication behind how you've worded this. It's easy, as somebody fat with tech money, in the political know and with the benefit of hindsight, to call out those small-town rubes for their myopia, to say "but of course Walmart is a monopolist, of course the local grocer will suffer if you give Walmart your business; markets are zero-sum, isn't it obvious?"
But I don't think that's really fair. If I get paid a few bucks an hour in middle America and every dollar counts, obviously I'm going to go for the Great Value breakfast cereal or whatever: I don't really have the luxuries that would permit me to vote with my wallet.