As in the class-action case, he usually represents big business. Reforms in communications and electricity deregulation often follow a similar path. There are some movements in law toward some space for state actions but they are coming more from the courts than legislatures. Two recent Supreme Court decisions in the sovereign immunity area have given states immunity from national laws on labor, patent and trademark law. Even these have been criticized by libertarians for siding with the state over business rather than appreciating that the lower level entity was allowed to make the decision.
Governance is a question of priorities.
But which legislators do it is critical. The more important value involved is the separation and division of powers in the Constitution. The Founders could not be more clear that this was the essence of the government they created. And the proof that it works is the fact it is the world's longest-lasting government. The logic of the Constitution is to balance self-interested politicians against each other.