> if I live in a place with cheap power, I don't want some outsider to come, take advantantage of that fact, and use so much power until the prices approach average power prices.

There is no way someone use so much power until the prices approach average power prices, without making other changes. Maybe they offer lots of job positions? Maybe they pay lots of local Taxes?

Yes. Money is not everything, but good people can use those money to do "moral" things.