In a recent study, researchers from the European Environmental Bureau (EEB), the Stockholm School of Economics (SSE), and the Potsdam Institute for Climate Impact Research (PIK) questioned the planned development of new nuclear capacities in the energy strategies of the United States and certain Eur...
If renewables were subject to the same regulatory ratchet we impose on nuclear, they wouldn't be profitable either. Basically, whenever they figure out how to operate cheaply and efficiently enough while meeting existing safety requirements, regulators react by toughening the requirements.