Activision wants a a bigger share of PSN and XBLA revenues for the DLC and games they create. Not sure if they have ever released anything on WiiWare but even that would be affected for revenue shares.
If they were to get that demand it would only be a matter of time before the other big companies request personal shares and might rise prices of DLC or games.
http://gamrfeed.vgchartz.com/story/8...psn-money-pie/