There may have been a movement by the New Republic to completely dismantle the Rebellion in the years after ROTJ.
I’m still doing a decent job keeping up with the new EU, so I’ve actually got a decent idea of this situation. Aftermath has Mon Mothma talking pretty seriously about demilitarizing. Lost Stars has the Battle of Jakku a couple years after that, so we know it doesn’t take right away, but I’m pretty certain that ends up being the case. I think we’re going to learn a whole lot more about the political landscape in May when we get Bloodline, which is a Leia-centric novel set six years or so before TFA.