> The current price of nuclear power in the US and Europe is almost entirely due to overregulation
And here I thought it was actually due to the manufacturers living in Fuckupstan, not being able to build their products at costs they had promised. The recent French experience with the EPR is astoundingly bad.
Of course that cost could be lower if any screwup could be excused by greasing the appropriate regulatory palms. The regulation would be "over" in the sense that it adds to cost, but is it "over" in the sense of not being necessary? You do not have the contrafactual evidence of what nuclear safety would be like without that regulation.
The first link you gave there presented assertions that French reactors were cheap back when they were building lots of them. But those cost figures are opaque and unauditable and cannot be used as evidence that the reactors actually cost what they claimed. Those making those claims had every motivation to lowball them.
It's also improper to assume nuclear and renewables are assigned the same discount rate. Nuclear presents larger risks to investors (from technological obsolescence and from failure to complete the power plants at all), which should properly be accounted for by imposing higher interest rates. Assuming renewables and nuclear get the same interest rate is an implicit subsidy.
Ultimately, the pronuclear antiregulatory position boils down to "why don't you just suck it up and let us subject you to more radiation, which really isn't bad? You're being so unfair!" One sees this in the whining about the LNT hypothesis for radiation effects.