AI doesn't make writing obsolete, it makes it even more important because human inputs are necessary for all existing systems.
This is now SOP for plenty of PMs and TechDoc teams at a couple large companies, and on the roadmap for others.
The act of transcribing is low value and should be automated, but the act of creating and moderating abstract ideas is still something in the human domain.
Reuters has been doing this since the early 2000s btw at their R&D lab in Bangalore.
An LLM has no charisma and the time of buying a book from an AI being "cool" has already come and gone.
There are just ML algorithms and humans who (mis)use them to benefit or harm.
Where you may be right is that it will certainly help a small number of already rich and influential people concentrate even more money and influence. However, whether it will lead to any qualitative change is dubious as far as I’m concerned.
You don't need to understand all this but simply trying to make money will contribute towards achieving the AGI so work as hard as you can to make as much money as you can and the rest will take care of itself.