This is a silly argument[0], but for what is being discussed, what really counts is the average wealth per adult for which France does quite well at 11th (for median, 13th for mean)[1]:

[0] with respect to classifying countries as rich or not as it ignores the fact that the category is not fixed in size.

[1]https://en.wikipedia.org/wiki/List_of_countries_by_wealth_pe...