Exactly, its to efficent. Switerland for example has a couple of plants, and once you build them you don't need to build more for like 40-50 years. And because

Exactly, its to efficent. Switerland for example has a couple of plants, and once you build them you don't need to build more for like 40-50 years. And because nuclear is so country-by-country you don't get global economics of scale.