Largely, most of the paper pushed in these big pharma companies is in regulation and compliance. So much so that it isn't that much of a stretch to say they are mostly regulatory compliance companies with a research division attached. It's not entirely true, of course, but it does fit a bit. Also, there are a lot of regulatory agencies out there, not just the FDA.

That regulatory function is quite personal and hands on. It's relationships built up over months and decades. AI, almost by definition, cannot replace it or augment. Sure, faster, better. But even then that backlog will grow to meet any gains.

Source: I have done (and have family members that do) compliance and regulation for larger phramas, including drugs and instruments that you have had (with near certainty) your medical reports analyzed and produced by.