I understand but I was talking about this on an international trade level not on an individual level. While manufacturers might get paid in USD when they import goods to the US it is unlikely that they will keep the USD if they're a foreign company / producer or exporter. The money will be exchanged to their local currency. For tax reasons, for supply reasons and probably many other reasons. In other words, it's just foreign exchange

Btw, the same applies to venues who decide to accept Bitcoin from customers. Most venues will be forced to sell the Bitcoin again for their local currency because their suppliers, their rent and their wages are most likely due in their own local currency.