My problem with it is that I think baseball has some dark days looming on the horizon. The interest in baseball seems to be dwindling with each generation here in the U.S. The international market is offsetting it to some degree but not enough in my opinion. This is not entirely the fault of baseball's system. Attention spans seem to be dwindling with each generation as well. I don't think that making the Pirates or Royals good teams matters for the long term health of baseball but I do think that creating the perception of parity would go a long way toward reinvigorating the fan bases of many teams. This would be a good thing for the long term health of the game.
I agree with your general point, that interest in baseball is dwindling. I agree parity would be better for the game, but to me that isn't necessarily something they can control either because of the strength and mindset of the union. Many other factors (like changing attention spans) as you say are also out of control of the game. What really bothers me is that some of the things they do control they ignore.
My favorite pet peeve is the way most games in the off season and all of the world series have to be night games. They are maximizing short term profits at the expense of long term. Since less kids can watch the games, mostly it is the kids of true die hard fans who also become fans. It is becoming less and less likely for the kid who is a casual fan to fall in love with the game.
It is like a farmer selling their seed corn. Yes, they would make more money that season, but then what do they do in the future?