Here's the key problem with all of these "new nuclear" plans:

They cost a boatload of money up front, which they can't finance unless they get purchase commitments from utilities for sale of their output at above current rates. Because in the best hypothetical marketing case (pre-overruns) they are still the most costly way to generate electricity known to Man.

Consumers are already aware they can generate their own energy cheaper than their utility's current generation and transport with rooftop solar+battery, and those costs go only down. The savings is more than enough to pay for the interest on the financing too.

If utilities keep buying the most expensive generation available they will soon find they have nobody to sell it to because their customers already solved that problem for themselves and don't need them anymore.