People can't be trusted to make that kind of decision. People tend to screw over their future selves. Our brains consider our future selves to be different people.
it is arrogant to assume you know how to spend someone else's money better than them. should people smarter than you be managing your life for you?
It's not a out how people spend their money so much as people having their options limited by existing monopolies. If people can't buy an alternative it doesn't mean there is no demand
& the existence of government regulations or incentives do not prove there is free market demand. It shows there is political demand (far removed from individuals choices).
I agree removing barriers / manipulations is good (stop oil subsidies, stop clean energy subsidies). Beyond that you’d be telling people how to spend their money.
No one is preventing solar companies from existing. Anyone is free to start an electric car company. There may be economic limitations to the tech but that is a different issue.