The rich corporations and people are used to having wealth transfer "up" to them. That's why it has gotten so out of hand (the gap keeps increasing). By flipping the UBI switch, they aren't going to all the sudden say, "Well, it was a good ride while it lasted." Those tax increases will be funded by syphoning everyone's UBI back to the rich in the forms of price increases.

So, then the poor will be left with decreased Social Security, Medicare, Medicaid, etc. But hey! At least they get 12K a year!