Those better fail safe designs have still have a long way to go to be commercialized, regulatory approval is just one step. It would take a lot of R&D and inve

Those better fail safe designs have still have a long way to go to be commercialized, regulatory approval is just one step. It would take a lot of R&D and investment to build a real fail safe plant. Unfortunately no one wants to put any money into it. Just stick with cheap aging risky designs.