Pesimistically, you are right, there will be no new jobs. The entire goal of these companies is to monopolize near 0 marginal cost labor. Another way to read this is that humans are unnecessary for economic progress anymore.
All that I hope for in this case is that governments actually take this seriously and labs/governments/people work together to create better societal systems to handle that. Because as it stands, under capitalism I don't think anyone is going to willingly give up the wealth they made from AI to spread to the populus as UBI. This is necessary in some capitalist system (if we want to maintain that) since its built on consumption and spending.
Though if its truly an "abundance" scenario then I'd imagine it probably wouldn't matter that people don't have jobs since I'd assume everything would be dirt cheap and quality of life would be very high. Though personally I am very cynical when it comes to "agi is magic pixie dust that can solve any problem" takes, and I'd assume in the short term companies will lay off people in swathes since "AI can do your job," but AI will be nowhere close to increasing those laid-off people's quality of life. It'll be a tough few years if we don't actually get transformative AI.