At what point after which is the failure of the revolution inevitable?

One
could argue that the moment when the Revolution's failure becomes inevitable takes place in
chapter five whenchasesoff the farm and usurps power. In chapter five, Napoleon interrupts the
debates concerning the windmill by calling his nine ferocious dogs from the loft to attack
Snowball, who is quickly chased off the farm. Once Snowball is off the farm, Napoleon takes the
podium and announces that there will no longer be any more Sunday meetings. Napoleon goes on to
say that all policy decisions will be made by a committee of pigs and utilizesto spread
propaganda. By usurping power, Napoleon abandons the democratic process, assumes absolute
authority, and creates an aristocracy of pigs. At this moment, the audience realizes that the
Revolution is a failure and that Napoleon will rule the farm as a tyrant. As the novel
progresses, Napoleon continues to oppress the other animals and behaves like Mr.
Jones.