Because there is so much excess capacity in the worlds refineries, because there is a fair rangeof capabilities in that excess capacity and because if there was not enough refining capacity to handle all the sour crude that is available, the price of sour crude would be selling at a greater discount to sweet crude than the current modest discount.
Communications pros now have the creative capacity and a rangeof publicly accessible media platforms to deliver content directly to end audiences, bypassing the media filter altogether.