There are two answers to that. One is that they are not forced to. So when a company looks at what it's going to invest in, is it going to invest in revenue-neutral emission reductions or in the production of more oil and gas that will produce profits? From a business point of view, from a bottom-line point of view, it makes more sense if there are no constraints on its operations from a climate change perspective to continue to invest in greater production.
On February 15th, 2007. See this statement in context.