I’m not making an argument here. What I would like explained is why we don’t already have UBI, given that mass production and automation has existed for a very long time already.
In short, automation shifted the amount that needed to be done in certain industries. AI could possibly make shift so large that there won't be enough work for everyone to do.
I’m really not trying to argue for or against any new technology. But I don’t see why any new technological change necessarily brings about UBI given the absolutely drastic reduction in the amount of labor necessary for human survival we already achieved in the mid 1900’s. So my question is still, why did the old forms of automation not bring about a post scarcity utopia (or at least a UBI)?