Not really answering your question but, from the IEA the capital cost of a nuclear plant is about 50% higher than a coal fired one. Although cost overruns over the last 15-20 years points to that being maybe too generous. That would indicate that safety issues are only about half to a third the cost problem.

Other problem is the long construction times. As the planning and construction time becomes a larger fraction of the payback time, the economics gets increasing bad. That's a problem for nuclear plants with 10-15 year construction time lines and 30 year payback. Compare with nat gas or solar plants with 2-5 year build outs. Worse nat gas plays back in 5-10 years.