The problem with comparing Football rego fees with other sports - League Aussie Rules and Cricket - is that they are owned and prioritised by our major national media outlets, providing massive revenue streams. Unfortunately this is very much to the detriment of our truly international game. The promotion of these other sports and publicity garnered for their players has come at a big cost to Football. Regardless of how big the fish may seem, League and Rules players in particular will always only be swimming in a tiny pond. But propped up by the media that has no real interest in our international success, they will continue to thrive at domestic and grassroot levels.
Given the same funding level and media exposure, Football would kill off the other sports in due course. But self interest won't let that happen.