USA, Canada, Australia, New Zealand, and similar nations are settler-colonial nations where the indigenous people have been genocided to the point where settlers vastly outnumber them. How is decolonization going to work in this situation?
Bonus: How is a post-revolution Japan going to reconcile with the Ainu and Ryukyu people?
For Australia, it will be a long slog. The land rights acts getting through parliament that previously were making progress started to dry up about 15 years ago. IMO it was a sign Australian politics was going down the toilet.
Previous acts granted ownership of particular areas to various indigenous land councils. The councils would manage the land and it’s effectively a perpetual lease owned by the indigenous community. So post-revolution, those land rights concepts would have to come back and get expanded further to make decolonization work.