Nuclear isn't built because it isn't financially viable. I'd love to see more nuclear, but it just isn't going to happen anytime soon. Maybe if we added a carbon tax that was reasonable considering the climate emergency it might be.
I doubt we will see any reasonable economics for nuclear as long coal, oil and gas is allowed to be burned.
True, and that's why the carbon tax would have to be super-high as to make oil and gas financially un-viable. Banning burning fossil fuels is a better step, though, I agree.