Steam turbines are mature tech whose capex and opex are large and will not change. Likewise, high-pressure plumbing. Thus, costs are not falling, and new start

Steam turbines are mature tech whose capex and opex are large and will not change. Likewise, high-pressure plumbing. Thus, costs are not falling, and new starts are negligible. Even China, which asserts they will build 220 of them, has only started 10. The rest will be cancelled as their price is undercut, unless politics forces the matter. China is not cost- or value- driven. (Cf. "Ghost cities".)