Greater wealth means more to lose or be taken, and consequently the wealthy are more involved in politics. When you have more at stake, you make a greater effort to ensure the country is successful. Each of us who takes such an interest to debate here probably has something worth defending. Chap, Top, and Grind are constant opponents of the death tax and the capital gains tax because they stand to benefit from it. Alex/Jarod supports the right to hold companies accountable because it benefits him.
I think everyone who debates here has some compelling reason to take interest in where the ship is going if we own a room or two in it, or in chaps case a floor.
Except USC and wanderingbear. I do think that they may just be hobos who use library computers all day to stay warm.