By definition, unprofitable ventures will run out of capital and stop without government intervention.
> There seems to be a common misconception that free markets will arise naturally
History is full examples of humans freely trading with humans. International trade is completely co-operative, free of government oversight (there is no world government).
It is not a misconception that people can trade without a central authority figure. And the presence of the black market in all cultures shows us that it is universal that people want to trade freely.
> the role of goverment should be to determine the immediate value and future costs fossil fuel energy production.
Can you cite an example of when price fixing has improved living standard of the general population?
And is there ever been a time when raising energy costs has improved the human condition?
Do you really propose lowering the standard of living for the poor and middle class because of an unproven theory that the climate is a positive feedback loop and 2 degree change will snowball into catastrophic effects?