Some non-productive people are non-productively lazy, and UBI may work for them.
Others are non-conformist creative types, and UBI will half work for them. IMO it's good to have some of these types around in a business to shake things up - as long as they have some practical skills and aren't just dreamers.
Others are primarily interested in accumulating power, and corporations provide a perfect cover for them. They will get off UBI as soon as they can, but they're often incredibly toxic, and large organisations of all kinds are very good at empowering them.
With the odd exception, they're probably the biggest threat to the future of any business. And they're very good at disguising this. They're the people who turn in solid financials and performance stats. But the results are built on rubble, and often their management doesn't discover this until it's too late.