The younger generation of chic is less elegant, more "cool". BoBo instead of BCBG.
I agree with you, Mominatrix. It's no fun dressing like one's mother!
Yes, my examples were about the classic, older French style, but my guess is this younger generation will eventually embrace the 'uniform' of the older generation, perhaps incorporating a bit more of their own flair and altering the standard look somewhat for future generations. This is a good thing, I think.
Fashion, like other cultural references, seems to be shrinking globally. By this I mean that in the age of instant information we all have access to what is happening in foreign countries right now. Global shipping means we can spot something interesting and different in a foreign country and wear it within a week (finances willing), or be inspired to concoct something similar ourselves. Again, this is a good thing.
However, I still think the way something is worn will often be, while not necessarily unique to a particular country's women, at least different from how it is worn by another country's women, and will reflect more than the individual items in question. The effect will still be different as it will reflect the upbringing, landscape, culture, history, priorities, etc. of each country.
Which, I suppose, is quite a burden to place on a scarf, but there you have it.