UBI is free money foe every single person. Capitalism is about creating opportunities of making money. If I wanted to provide a product or service to society, I would have to take into account that my employees would need to be paid at least one monetary unit more than whatever the UBI amount was at the moment. That would make me price the product or service taking that into account.
In other words, UBI is a way of making the market less free.
So when peoples jobs start getting replaced and they can't find new ones what are they going to do?
Getting a different one or study in order to get another kind of job or create a new kind of job which doesn't exist already
It's not about the jobs it's about wealth. People wont need jobs anymore because they'll have robots doing the jobs and providing the income. Whether the robots are businesses owned by each family and the shares are widely dispersed or the robots are all owned by the state and the dividends paid to all.
javirid- I think you may be underestimating the future of AI. I recommend reading Life 3.0 by Max Tegmark. Great commentary on a variety of scenarios on how AI may play out