Marx addressed exactly this sort of improvement in productivity from automation. He was writing with full hindsight on the industrial revolution after all. I hope coding LLMs give professional computer touchers a wakeup call to develop some sorely lacking class consciousness.
>the capitalist who applies the improved method of production, appropriates to surplus-labour a greater portion of the working day, than the other capitalists in the same trade […] The law of the determination of value by labour-time, a law which brings under its sway the individual capitalist who applies the new method of production, by compelling him to sell his goods under their social value, this same law, acting as a coercive law of competition, forces his competitors to adopt the new method.
>the capitalist who applies the improved method of production, appropriates to surplus-labour a greater portion of the working day, than the other capitalists in the same trade […] The law of the determination of value by labour-time, a law which brings under its sway the individual capitalist who applies the new method of production, by compelling him to sell his goods under their social value, this same law, acting as a coercive law of competition, forces his competitors to adopt the new method.
From Capital, Vol 1 Chapter 12 if you're curious.