You'd be surprised...

It's not that they care about much fidelity to the subject or going deep anyway.

And half of the work or more is rewritting (sometimes not even that) other sources, like online articles and such

College students regularly do this, it's called "not showing up to lecture and writing the final paper anyways" :P

Corporate strategy consulting. 1 day to write 5k-10k words on a topic you have to research from scratch is not uncommon. It's all within a broad field of expertise and a sector you're familiar with, but could be products / companies / deals you'd never heard of.

I think the point here was that the ghostwriting is of really low quality. Overnight 10k reports are never groundbreaking or enlightening additions to human knowledge, but they need to be 90%+ accurate and polished enough to inform.

That’s also the average ghost writing rate. Not the rate the content farm he uses pays the ghost writers.