Although unclear, it appears that either Apple or the studios don't want users putting out trailers that could be misinterpreted as real studio-created trailers, and the easiest way to do that is to block the names from being used.
Although the Universal Studios' earth theme is available as a choice, as is the Paramount snow-capped mountains, the "studio name" field turns the words "Universal" and "Paramount" into dashes when using those respective themes.
You can view both pictures here.
Written by: Andre Yoskowitz @ 22 Oct 2010 18:40