Renewables are not enough to replace coal and gas, so you just need nuclear. Even if the big energy conglomerates didn't get the construction contract (which would be crazy), they'd get you on distribution instead of generation. Or they'll get hand-outs from the government if they start to fail, because they're too big. One way or another they'll get your money.
Do they? New construction on reactors stopped for a long time in the US. And cost is one of the primary downsides to building.