UBI should be a government initiative, and funding for it should be collected in form of tax, irrespective of AI. Because more and more humans are getting replaced with automation and technology in general, and a lot of this being done so gradually that you don’t notice it, or think of it as a problem. Every time you saw headlines like “xx corporation has laid off hundreds/thousands of employees” in the past, had very little to do with AI, but could have to do with technology and progress in general, plus a lot of other factors. Every little new development could have a butterfly effect that’s hard to calculate.
Neither AI, nor the loss of jobs in general, should be a factor for UBI funding. AI is just another new technological development, maybe even a disruptive one, but it’s nothing so new that we need to pick up our pitchforks against.
As for compensating creative owners, that’s a bigger discussion on IP protection and ownership in general, and the responsibility falls upon the IP owners (and maybe appropriate laws). For instance, we’ve seen news sites, science publishers etc paywall their work, and that’s because they want to protect their work and get compensation for viewership - and this has nothing to do with AI. If people want compensation for their work, then they should take appropriate measures to protect their work, and/or come up with alternate revenue streams, if it’s impossible to paywall their work (for instance, how some youtubers choose to seek sponsorship or patreon donations). If people want to prevent their work from being stolen and redistributed, appropriate action should be taken against the persons/sites stealing their work (eg via DMCA etc). It’s not the AI’s fault for eating up copyrighted content on public sites like pastebin.com or Scribd, it’s the fault of the people uploading it.