Because nuclear is hard to finance. Our economy is better at financing smaller things, and iteratively optimize them. Which is probably why wind and solar are

Because nuclear is hard to finance. Our economy is better at financing smaller things, and iteratively optimize them. Which is probably why wind and solar are beating nuclear by now, the cost of building one unit is much lower. We get the economies of scale from building thousands of units. Nuclear is too expensive for capitalism to work it's wonders.