> Sometimes they appeared that way if you offloaded most of your costs onto the taxpayer, like decomissioining expenses.

On the other hand you can offload most of your cost to customers if you just stop providing electricity.

The point of stable power generation system is not to haggle over 10% more or less, it's to stop price graphs looking like that: https://i.imgur.com/iJslMUa.png

Periodical gigantic deficiencies in case of just bad weather in December are much higher problem than relatively small costs spread over decades.