Conserving energy and thus saving money reducing consumption of unnecessary products and packaging and shifting to a clean-energy economy would likely hurt the bottom line of polluting industries but would undoubtedly have positive effects for most of us.
Their very conservatism is secondhand and they don't know what they are conserving.
I assume we will have figured out a way to efficiently utilize solar energy and tied that to an efficient way to use nuclear energy in such a way that it doesn't pose a serious environmental issue.