Finance is not free, there is always opportunity cost.

Interest rates are very low still though. Governments can borrow at nearer to 1% than 10%.

But that money could also be applied in other areas of the economy, that might have far better payback. And with France's current track record of nuclear construction, throwing more money at nuclear without fixing the fundamental problems first is serious misallocation of capital.

Just the latest news that is the same as the last decade of bad news:

> EDF now estimates the total cost of the project at 12.7 billion euros ($14.42 billion). Its expected cost has more than quadrupled from the first estimate made in 2004.

https://www.reuters.com/business/energy/edf-announces-new-de...

$15B of lithium ion battery factory would have far far greater carbon impact, dollar for dollar. $1B on early stage startups would similarly be more impactful.

The total cost (to date, as it isn't yet delivered) of the EPR was mid-2020 established by the "Cour des comptes" (Court of Audit) at 19,1 billions euros. A recent official announcement added 300 millions euros.

French: https://www.lemonde.fr/les-decodeurs/article/2019/06/24/epr-...

Also insurance. All plants in the USA are insured by the government, I'm sure the same is true in France as well.