Yes, it's what we're used to because it's been in place. I believe you just cannot have two, three or four—or even just two—different regulatory regimes.
This is a tried and true regulatory regime. Sometimes we disagree with it, too, but this has been developed over 50, 60, 70 and 80 years.
Is it perfect? Probably not. Everybody's still trying to improve on it, but I don't think you improve on it by all of a sudden starting another regulatory regime.