IMO, Pratyush is right. Although I don't give the Aussies much chance to win, enforcing the follow-on would have given India every chance of victory, and no real chance of losing. I know there were people that thought that Australia setting India 170-odd in a couple of sessions might have tested them, but I think that would have been handing the Indians the game on a silver platter. Our bowlers have struggled far too much to contain them.
There was the thought that Kumble might need a rest, but that could have been slightly alleviated by not bringing Kumble on for 20-25 overs. And the worst that could happen to India would still have been a draw. I just think that in batting again, his chances of a win were less than if he enforced the follow-on - and then there's the weather to think about, too.
Both sides' have looked most vulnerable in the field rather than with the bat in this series, and that's where India are standing, right now. It wasn't necessary for Ganguly to risk defeat to attain victory in this match - in fact, not enforcing the follow-on reduced his chances. I rank the Aussies at 50/50 for the draw now, whilst I think we were in horrible trouble if we had followed on.