Why is this logical? These partners have already shown that they are going to betray France's trust and lie to them. It would be better to be on your own than have unreliable partners, or worse ones that work against you.
What? Betray France? So France jeopardizes a nation's national defense by failing to deliver critical defense assets, and this is spun into being a betrayal on France?
Are we supposed to put our blinders on to think that this issue is about France's commercial interests and not Australia's national security?
The betrayal issue comes with the very recent statements from Australia about supporting the project, whilst behind the scenes unbeknownst to France planning to scrap it.
https://en.wikipedia.org/wiki/Phoney_War
A lost sale in contrast? That seems more like normal business than lying and betrayal.
I would not expect France to the same behavior with other EU members.
Culture runs deep. France adores Vercingetorix, who surrendered to Julius Caesar after "releasing" all the women and children to die of starvation between the Roman and French lines at the Battle Of Alesia.
Since WWII, France has been a fickle ally to the US at best.