First of all, why 30%? We all know that in time 100% can be automated. Anyway, I see two posibillities:

1 Kings: AI's endgame in the west is realtime monitoring of it's citizens/potential protesters. They will not tolerate discord, anything threatening money or power will be found and ended. We will have a few "kings", and they will rule over us with the illusion of "democracy". Every so often we will vote for a puppet, but the kings will remain immortal and untouchable. Everyone will recieve a fixed ammount from these kings, but if you are not loyal, they will cut you off.

2 Communism/Socialism: We can already see "back factories" in China, meaning they are fully autonomous, materials in one end, product out the other. So they have already been trying to compensate workers who lost their job. My hope that provinces with high automation, robots/ai will provide universal basic income. Besfore you criticize China for being totalitarian please read some recent articles about things they built/opened, huge waterway-channel, two larges water-powerplants, thorium nuclear reactor, broke limit on new tokamak.

That's the way I see it at least.... Have a good day to you all. Try to stay positive.