Jackpiner, go back and read some of the posts in this thread and you'll see the displacement point has been made about a dozen times. It's all about moving the goalposts to achieve the desired result, not fairness, which is why it doesn't make sense to you.
The AMA is looking more and more like NASCAR every day. This totally reminds me of how NASCAR killed the big blocks and hemis in 1971 and forced everyone to a 355 CID or smaller engine by changing the rules. All the cars are pretty much the same now, with innovation limited "to keep the cost of racing down." Remember, too, that most of these 4 stroke dirt bikes are trickle down technology from the street bikes, so not a lot of incremental R&D for the manufacturers. So it's all about $$ now, especially sponsorship $$. I think it's clear that this is where the AMA is going; will be interesting to see what the Europeans and rest of the world do.