The US Federal government subsidises Nuclear power to the tune of many Billions per year. There is not a single nuclear power plant that works as a 'commercial' entity. I.E they do not pay commercial rates for insurance

Every country that has a 'research' nuclear reactor spends hundred of million to do 'big' science.

Australia installed a new reactor about 4 years ago and it has been off-line for most of the last 2 years. Costing over circa US$ 75 million to import medical isotopes rather than producing them within Australia. Producing isotopes is the main use of the reactor.