I've never heard that IPS (not the content provider) is throttling down Video Quality by altering the traffic. Do you have some links to back up that claim? This doesn't make much sense, as they would have to download the high quality video anyway, then invest massive CPU power to downscale this. Most content providers will scale down the quality if they detect bad network conditions. If ISP would want lower quality, they could just artifficaly slow the connection.