its an interesting point.. but not as simple as half of the replys on here would have you believe..
Its most defiantly not largely due to physicality..
I mean, just looking at tenis, we can see a sport where although women may never perform to the level of men, they do have a serrious proffesional league, which draws in big crowds and good amounts of revenue..
So why not in football?
I mean, if you go back in history it may explain why..
Between the invention of the professional football, and the first world war.. womens football drew huge crowds.. some games up to 50,000 fans..
But then women were banned from playing football within FA grounds, in 1921, and things start to go wrong.. that ban lasted 50 years, up until 1971..
So whilst in sports like tennis women were still competing in similar competitions to men, throughout the whole century.. in football, they were banned from playing by the governing body of UK football..
Ofcourse in that time the mens game developed beyond anything, and now its just to late to catch up..
So, for me I would put the lack of sucess of womens football down largely to this ban, rather then their differences physically..
Sure they would never play the same level as men, but that is not the reason they do not have an entertaining and well funded system..