> France has most (or a significant percentage) of the leading fashion houses and cosmetic brands. So it makes sense.
Also, I think French words (in general) have associations of "high class" and "fashionable" in the American context, so calling something by a French word is an easy way for a marketer to fancy something up (for certain classes of something).
There are no English words of non-French origin for many of these; it's not a marketing tactic: it's just the only way to denote e.g. boucle fabric or chenille yarn.
Also, I think French words (in general) have associations of "high class" and "fashionable" in the American context, so calling something by a French word is an easy way for a marketer to fancy something up (for certain classes of something).