Writers should at least get a fair share of the residuals (iirc residuals are profits from streaming services). South Park, late night shows, Daily Show, Mad TV, and SNL are few examples of how huge an impact a good writing team can have on a show, and I'm still only talking about comedy.

Imagine all of your favorite series' going the route of GoT's last season. That's what will happen when you remove humanity out of the equation for writing a show. Though, tbf, the writers were still human, just were not perceptive enough at the consequences of rushing the storyline at the time of the last season.

I'm guessing all big production companies are going long on AI, thinking that although writing will be terrible, it will learn and improve in the future. At least, that is my (wild) speculation.

AI may be perfect but it ain't human, and human is just how I like my shows to be.