UBI will be introduced, just not in the way most of us would like. It will be throught Quantitive Easing, as currently done by FED.

What QE does is - it concentrates the wealth in hands of 0.1% of society. Each financial crisis (2008, 2020) only speeds up this process. Once top 0.1 owns more than, say 90% of wealth we will be back to ancient Rome - "panem et circenses", wealthy people throwing some scraps of wealth towards mases, just enough to keep them from revolting.

Gig economy will also play some role: we are slowly cooking the frog, getting people used to the fact that they don't own their homes, or their cars, they do not have pemanent jobs. Everything they have is a short term rental. They are living using borrowed things, on borrowed time...