I don't see how this can backfire for Gazprom. The whole world has no choice but to :
> review consumption habits
> increase investment in other sources of energy including renewables
But even then, we'll need all the gas we can get. And in any case, if that gas is cheaper than other sources of energy, you can be pretty damn sure that there'll be a market for it.
Gazprom can't lose on this. They only have to be prepared to sit it through... alternative routes they will get... the money the will pocket.