Were gas and coal powered stations to pay for output of carbon dioxide to the atmosphere the financial situation would look rather different. That's not an entirely unfeasible future condition.
Why should they need to? The theory of AGW is looking more and more fragile as time passes, even the figures upon which the theory is based are becoming more and more into doubt as things get revealed. The trouble is that there is so much money to be made out of it, both by scientists for research and for speculators like Al Gore et al, also of course governments can use it as an excuse to raise taxes and control the people through the fear that is being engendered of a climate catastrophe, that it'll take a while to die.
And there's always the nuclear option.