The question is what do you want government to do? There are non-state/non-corp solutions for every necessary function. Without the need for a profit motive or "progress for progress's sake" a lot of jobs would not need to even exist or could be automated or done by piloted robots. We don't need a $1T military if we are not trying to invade the world, active community militias and communally built defenses would make invasion more trouble than it is worth. A good book to read is Murray Bookchin's Post-Scarcity Anarchism. It builds off Kropotkin's Mutual Aid and factors in environmentalism and modern technology.