The new businesses created, might look very much like the old businesses that disappeared. But they're not focused on scale and profits. They're focused on an ideal of pushing the boundaries. Maybe a single craftsman making small one off hand made pieces. Maybe a pizzeria that puts out a small quantity of the best pizza. Little individual pursuits towards perfection. Enabled because economics is not important. If physical AI and super intelligence can do "everything" (work with me here) you're free to do small scale things you love. You're also free to raise children at home, work on mega projects, explore the world.
The alternative is a small subset of an elite inherit the world's wealth, create a prison society of surveillance robots that keep the permanent underclass at bay with video games, tiktoks, and pills.