Even if they killed every last member of the empire and the first order, the new Liberal government would just collapse into fascism again under its own contradictions. Until they create a federation and use their ample tech to actually reach post-scarcity communism it will keep happening because the galaxy is filled with slaver cartels, mafia rings, siths & corporations that own planets.

The technology and economy of the Star Wars universe makes no sense. They have light speed travel that’s cheap/free, there’s basically no limits on fuel (Last Jedi is not canon IMO, fuel limitations were never mentioned until then), they have droids capable of anything & for some reason they are still just sitting around “moisture farming” on desert planets when there are uninhabited or sparsely populated worlds with temperate climates that are untapped.