Big nuclear projects are too slow to start nowadays and need stability over the long term (40-60 years). This is probably unsustainable economically and unwise

Big nuclear projects are too slow to start nowadays and need stability over the long term (40-60 years). This is probably unsustainable economically and unwise technologically in liberalised markets. That said, Generation IV reactors in a small modular format will be equally expensive as first of a kind and difficult to assess by the national regulators that give the go ahead. So what for nuclear? Bear in mind that if transport goes fully electric in the next 15-20 years, then the world will need almost double the baseload electricity it needs today, irrespective of improved efficiency of existing sources and similar reasoning. China and Russia are going long with new nuclear while the liberalised West is shutting down its plants or extends their life at a loss while thinking of phasing out. Another big dependency in sight then?