IMO the "main source of inequality" is that tech allows a small number of people to use technological and fiscal leverage to make an outsized impact on society as a whole. Anyone who has a job that produces value in a 1:1 way is positioned to be 'disrupted'. NLP, etc, just provides more tools for companies to increase their leverage in the market. My bet is that GPT-4 is probably better at being a paralegal than at least some small number of paralegals. GPT-5 will be better at that job than a larger percentage.
Anyone who only has the skills to affect the lives and/or environments of the people in their immediate surrounding are going to find themselves on the 'have nots' end of the spectrum in the coming decades.
Anyone who only has the skills to affect the lives and/or environments of the people in their immediate surrounding are going to find themselves on the 'have nots' end of the spectrum in the coming decades.