There should theoretically be places where the marginal costs of degradation are overstated and the benefits understated, and thus places with too little environmental degradation. where are we likely to find such places?

If we represent the solar system on a scale that allows us to walk from the sun to pluto in a few minutes, then a) the planets are microscopic and the stars are millions of miles away. b) the planets are the size of basketballs and the nearest stars are a few miles away. c) the planets are marble size or smaller and the nearest stars are thousands of miles away.