This would have needed to happen a long time ago to have the altnerative energy sources in production today. Which also begs another counterfactual scenario: what if we had spent even a slightly larger fraction of the taxpayer r&d subsidies on renewables rather than the extremely capital heavy nuclear research on both military and civilian sectors, with many decades long dead-ends (breeders, gas cooled, liquid cooled, fission, etc), we'd be decades further along with solar and wind.