Because now there can be competing voices with NBC from giving their "green" propaganda by companies or individuals who will be harmed by it.
That's nice in principle, but then elections are still heavily influence and decided by those corporations who have the ability to throw more money out there, NOT on the basis of the candidates true platform. Companies simply make most of their decisions based on whether or not they will grow and profit from it. A company harmed by green legislature will adapt to profit from it or go out of business. Political ideology seems irrelevant in this.
This why i don't understand why you or anyone else doesn't have more of a problem with this and instead we are focused on Obama's comments about the SC. It's dumb IMO. The real issue is, the decision gives companies even more power to influence elections, and this can't be a good thing in the long term. It seems to strengthen the illusion of freedom rather preserving freedom its self.
I may be so off based on this, I'm no expert for sure. But this is just what I see. It may sound good now, but it cant' be good. This green crap isn't going away.