How is this a surprise to anyone? A league set up to prioritise the interests of these 4 clubs in particular, a mandated Vic Government/MCG rule that dictates that 10 of the top drawing games must be played at their ground, prime time fixturing and stand alone "Blockbuster", plus heavily promoted double up games all aids these figures. All generally played at a ground that has massive virtually "free" access through MCC/AFL membership for those that want to go these AFL endorsed and promoted games. Sure these guys are traditionally are high drawing clubs, but the league does everything in their power to create the absolute most conducive environment for them to thrive.