Will not do one iota of good unless their government backs it. And what government in its right mind will back legislation that hurts its GDP?
First, your government does it all the time - any legislation imposing duties on corporations can be argued to introduce inefficiency, whether it is employment law, anti-polluting rules, etc. That reduces GDP growth.
Second, the assertion that addressing global climate change will significantly impact GDP is far less proven than the actuality of anthropomorphic climate change.
Show me some good, strong evidence that there will be a negative impact. Using your own standards of proof, I want to see actual cases of pollution control impacting GDP, not just model predictions (I would strongly argue that economic modelling is less predictively accurate than climate modelling) or expert opinions (economists are often so entrenched in their political views I would hesitate to call them objective scientists at all).
Third, many governments have already taken action - most European countries, including the UK. Data suggests the GDP impact so far has been so minimal to be almost unmeasurable - the UK estimate of GDP growth impact for the years 2000 - 2050 of climate change abatement is 0.01-0.02% of GDP per annum (source: http://www.ewea.org/fileadmin/ewea_..._public_consultation_background_document.pdf).
That is 1-2/10,000 of GDP! For the US that would be USD12-25bn, not even enough to fund a decent Haliburton reconstruction contract....
The CEOs of companies like General Electric, aluminum producer Alcoa, chemicals giant DuPont, Duke Energy, Lehman Bros, and BP America are asking for urgent implementation of curbs in the US - do you think they WANT to wreck their corporations? Of course not. They see a risk to be mitigated and a profit to be made in doing so.
I'm with them.
All the best
BFR