This isn't true. LA doesn't do any better than a mediocre job of fair-weather support for any professional team. That's why there isn't currently an NFL franchise there. I know plenty of LA guys that are still fans of the Rams because they were Rams fans before they moved and they understand why they moved. I don't know any Seattle guys that have anything but disdain for the Oklahoma City NBA franchise.
I can just image conversations between other owners not moving..." OK, just how high can we jack the location fee to with out killing a relocation? Do I hear 500 million? Can we get more?"