You really should do some research.
EPL is watched in more than 730m homes globally each year
NFL for instance has about 250m viewers each season
I did do some research, the EPL is fourth in revenue behind the other 3 I mentioned.
You also said "The AFL would probably prefer it if there were no supporters at the games then they wouldn't need to spend a fortune on infrastructure security etc. just enough TV towers to get the main source of income"
So if the Epl's success is purely based on viewership, why do you care if that is also the afl's goal?