Corporations, and governments too, have an incentive to limit the freedom of the press. These are powerful entities, often in cahoots, that can and will ignore the First Amendment when they can get away with it.
The disaster of BP should be a lesson to the world: stop environmental abuses before they escalate to unmanageable levels. In other industries, the same inevitable environmental destruction must be avoided.
According to ExxonMobil's CEO: "It is our duty as Americans to recapture this important record for the Red, White and Blue. No one should foul our beaches and destroy the lives of the people of the Gulf Coast except an American company."