In football, I think there's a huge amount of luck required for success. The entire game is based upon predicting the future.
Every sport involves the 'rub of the green' type luck, how the ball bounces, the weather, the decisions you get by officials etc but in AFL that is multiplied by 1000 times.
Take recruiting for example. In the Australian Cricket team you select a player to play a test match next week, based on their form at first class level. You can see how they execute their skills against high quality opponents and how they play the game. You know their physical condition, how durable they are, how they prepare and recover and what sort of a team member they are.
In AFL you draft a kid in high school, and hope that in 3 or 4 years time they have developed the necessary mental and physical attributes to be a high performing elite athlete. Something like 40% of players ever on an AFL list don't play 10 games. 60% don't play 50. The average is 19. And that's from players who actually play a game.
To be a successful team not only do you have to somehow beat the odds in the success of the players you draft, but you have to also get a group together who work well together and form good working relationships. That can understand each other and play well together.
And then you have the influence of factors of which you have no control, and AFL has more of them that any other sport that I know of. The prevalence of unpreventable injuries, who gets them and when, the fixture, the results of other games that influence your own position and outcomes, where you play, how many members your club has and what crowds you draw etc etc
There are so many factors that go into success and they are so contradictory and inconsistent, I can't see how anyone could see them as being anything other than random. You can name any factor in success and find a contradictory example from another success. I also think the margins between teams and coaches and players and clubs in most aspects of the game is relatively narrow. There aren't many secrets in football, and there is very little one person knows and another doesn't.
I understand it is a position that annoys people as they feel it is a slight on the people who have delivered our success, but it isn't at all. Having good people who are good at their jobs is a factor in success but you need the luck to select the right people and get the right mix there as well and then they need to be the right for for the players you have.
If anything, I think we should be more thankful for our success due to the chance involved. It doesn't happen often and it is bloody hard to find so we should enjoy it while it lasts and hope it comes again soon.