Earlier quoted context omitted.
I think there is a bit of a brain drain, but it's also compensated by great engineers from poorer countries (Italy, Romania, Poland etc) migrating in If remote works, it won't really be a brain drain anymore, because they'll be paying taxes and spending their money in France :)
Is there any reason why the engineers from poorer countries will emigrate to France instead of the better-paying countries?
If 10 years ago there were predominantly outfits servicing larger US/UK/Scandinavia companies, now it's shifting towards building their own products/services. Basically the guys learned how to do it and not they start spreading the wings. The only thing missing in Europe is active and mature VC sector that could match that in the US.