> Oddly, those same single family home owners would become rich if they could subdivide their properties for intensive development. I have never understood this paradox.

It's because you assume their motive is greed, and then try to interpret the reality of the situation to justify your original assumption. Assigning greed as a motive is a result of a simple projection "They have something I want, they won't let me have it, I am a good person, therefore they are greedy."

If you think their motives might be to continue living in their homes, to not have their neighborhoods packed with traffic or the sun blotted out by hideous condo boxes, their problems with large multi-unit developments built without regard to adequate parking might make complete sense.