Yes it was a simple example to highlight the flaws in arguing that viewers should determine the split in funding...
I understand their are some big divides in South Africa, Australia isn't nearly that severe but it could still be argued that the rugby union following demographic in Australia is of the higher income category compared to the other mainstream sports, this is reflected in the companies who sponsor australian super rugby teams and the Wallabies...
In terms of the Foxtel business model, i'm not to sure to be honest, Foxsports has long been the backbone of Foxtel and Super Rugby was one of the first exclusive sports signed by the broadcaster, the NRL and AFL have since leveraged further broadcast agreements which split the broadcast of their games between free-to-air and pay-tv. The A-League(football) is the only other mainstream sport exclusively broadcast on Pay-tv, with that rugby union receives similar funding if you examine average/peak crowds and the length of the season.