Nuclear failed in terms of price/megawatt and will fail because it economically doesn't pay off requiring large government subsidies for everything from large scale power purchase agreements, to security and long term waste management. Its also centralized, and more difficult to defend in a world that is threatening to descend into regional conflicts and climate driven disasters. If one were take a serious long term view about industrial progress, one would avoid nuclear, avoid fossil fuels, and install and develop decentralized renewables and battery techs