Yet nuclear reactors used to be built much faster and still are in some places. There is clearly something going on.

If you call all these things 'market forces' then its meaningless to talk about market analysis. The winners are picked by the political process.

While solar and wind are easy to play around with its that does not get you to de-carbonised energy production.

We don't need to 'play around' we need to mass produce cheap carbon free electricity.