This entire article is an over-simplification of this very complex subject. And so why do they commit to sell some through advertising? It could be an emergency as far as you're concerned. When this happens, you lose a sale you already had. https://sociallawy.com/story8185709/%D0%9F%D0%BE%D0%BB%D1%8C%D0%B7%D0%BE%D0%B2%D0%B0%D1%82%D0%B5%D0%BB%D1%8C-shantellwhitesidml