A 50% unemployment rate seems highly unrealistic now or even in the not so distant future. However, let's assume this did happen. It would be totally ugly and insane to see, the world would probably look like Mad Max.
totally possible with the emergence of AI it already replaced so many repetitive jobs and left some people unemployed assuming AI will not replace job is naive approach towards the impending problem thats about to come.
in the future when AI gets better and better surely some people will have idea in replacing current workforce with AI for the sake of efficiency and also to keep the factory operating 24/7, future is grim for people that don't have skill, I just can see how detrimental AI will get in the future when people realize that deploying an AI for hard labour would be beneficial, even tesla right now trying to invent robot that moves like human and what I mean by moving like human is quite literally replicating human muscle movement in every move its definitely have the ability to pull of the same thing that human are doing right now, you know the unemployment rate might even hit 80% in the future the only way to save many from being unemployed is regulation from the government in regard of AI for labour.