Only way UBI works is if the govts increase taxes on all income or any income to almost 90%+...

And then re-distribute to each person accordingly. That ain't happening, no govt will be willing to try that, and rich won't let that happen, they will become slightly rich from very rich. that just ain't happening.

Have you heard about the last century? A few governments did that. You had to stand in line for food and your basic goods.