A news item here today suggests the situation is not confined to FranceI don't know, really. I’m not sure there wouldn't be some forms of controls so as not to feed hens that don't lay, or lay unsellable eggs. But anyway I think most would not survive being egg bound or having trouble laying in such conditions.
I don't agree with saying that cages are banned because an enriched cage is a cage with 750 cm2 (0.8 sq ft) per hen (600 on the floor) instead of 550 (0.6 sq ft), with a nest, and a dustbath and a possibility to roost. I still call that a cage. As animal rights association point out an A4 sheet is 600 cm2.
French egg industry says in 2023 this is the case for 23% of layers, so that is almost 1 out of 4 ; they are refusing european sanitary advice to put an end to it.
https://www.theguardian.com/environ...nd-dirty-against-eu-ban-on-caged-farm-animals
Perhaps it's worse in the Netherlands BDutch, because you have a very assertive industrial farming sector there?