it's still a Pareto distribution, I'm sure, but mega-stardom kinda died and was replaced by all these mini-stars, as far as I can tell. I'm not sure it supports your hypothesis.
I'm not really in touch with other genres, but I like to watch chess videos/streams on Youtube and Twitch. The vast, vast majority of views and revenue are captured by about ten people.
I like those people too, but I've also watched a lot of smaller acts, even some amateur players not much stronger than me. So I get those recommendations, and I see their view counts. They aren't making anything at all.
There are other people who have some followers, but even 50,000 followers would be a dream for most people doing it and they will make next to nothing from that. I'd guess there are at least 30x the number of strong, titled players in the 50k group as there are in the 1MM+ group. These are all people who were chess prodigies as kids, won every scholastic tournament in their state, took gap years or went to colleges that let them basically major in chess, travelled the world for tournaments, with awe-inspiring skills, and they are not making anywhere close enough to live on.
And the thing is, I think software might even be tougher in twenty years. Its hard to get people to change from a system they use to another thing, much harder than recommending a new face on Youtbue.
I think history will rhyme with the offshoring trend but with AI this time.
Try to remember, AI is a tool, not a solution, and there will always be new problems. There's a strong case that unlike every other time people said that technology will kill all the jobs, this time it actually will. But a helpful framework comes from Clayton Christensen's Innovator's Solution (not the much more famous Innovator's Dilemma) - whereas a business has well defined needs that can be satisfied by improving products, customers (i.e. people) have ever evolving needs that will never be met. So while specific skills may lose value, there will always be a demand for the ability to recognize and provide value and solutions.