Interesting.
I followed that quote to it's original thread and read something I really really need to comment on. So here are my apologies for mixing threads.
I've seen wars lost, or not started, because of lords running taxes too high and having to remain in their region to keep them under control.
The entire point of having gold is to make war. I would find very little satisfaction in sitting in my region all day, heaping up gold and having nothing to spend it on. Don't blame the lords who like the region management game, blame the lords who don't share their gold for the greater good, i.e. war.
Then kick the bastards out.