What if they were allied with America? They could have bought some.
Keyword being "if".
Cause Molerats was made pre-war by USania by using FEV, which other countries did not have.
Since USania was at war with China they sent them over to destroy their agriculture.
Hence, no Molerats in France.
They are weapons like any else, and there are still guns made in Europe.
But Energy Weapons were an american design.
Other countries "could" have bought design documents for them, but would USania really want to give other nations an upper hand that only they currently got?
And Europe was engaged in the Resource Wars.
Do they really have the money to buy these documents?
Do they have the resources to produce them in a significant number?
If they did, EW would still be incredibly rare.
Laser Rifle would be like finding a fatman in FO3. (Which there was like 8 of right?)
And Plasma Caster would be like finding the alien blaster.
Just like there's no McDonalds outside America.
As far as I recall, Poseidon was a USanian company.
Since the world was very tense and eventually lead to full scale war I don't see why Poseidon would contract other countries, and Europe was getting really poor nearing 2077, so they probably did not have the money to contract them.
[EDIT]
Wikia had this: "Easily the most powerful energy company in the world prior to the Great War, Poseidon Energy was an umbrella corporation with its fingers in virtually all known forms of renewable and non-renewable power sources, so long as they remained profitable."
So... "As long as they remained profitable" =/= France.
I don't think there was some kind of a dark age going on in Europe prior to the Great War.
Robots were designed by Rob Co. A USania company.
Again, Europe was falling to pieces, they would not have the money nor resources to buy this technology and produce it in a significant mass to make an impact.
Of course, there "could" be robots, but like EW, they would be so incredibly rare due to the resource wars.
Even then would it be a fallout game without the Factions and Tech of current fallout? I don't feel it would.
Me neither.