[epapsiou]

I think it has more to do with demand. Ambergris can't be found in large quantities. This makes it useless for big houses like Chanel,Dior,Guerlains etc. The other thing is consistency. The commercial fragrances want their fragrance to smell the same every year. Something you cannot guarantee if you do not know what Ambergris will you stumble upon. These days Ambergris is used mostly by artisan perfumers.