How would I know? I wasn't there, and I don't have a crystal ball nor a time machine.
If you check the Wikipedia link in my previous comment you'll see that it was actually a whole epic constellation of events and forces and personalities and masses of people. Not quite the Mahabharata but still pretty epic.
The particular thing that Gandhi's "arc", if you will, achieved was to demolish utterly the rationale for the British Raj in the first place: that Indians needed outside governance. The non-violent movement showed that Indians were the moral equals or even superiors of the British, and Gandhi knew it.
Winston Churchill: What do you think of Western civilization?
Gandhi: I think it would be a good idea.