[ok123456]

No. I'm stating where the paper's assumptions are clearly violated.

AI companies are intentionally trying to monopolize the supply of inputs needed for R&D. This violates homogeneity of degree 1.

[gwerbin]

Isn't this true in a lot of situations? Basically anytime maximum production capacity of an input is limited, or scale-up time is very long, firms are large relative to the supply so they are not price takers.

[curio_Pol_curio]

PP's point has (mostly?) been addressed in

https://www.aeaweb.org/articles?id=10.1257/mac.20180386

Inputs that can be monopolized are manifestly _not_ the intangibles; price-taking is independent of their effect

[gwerbin]

I don't think they implied that those inputs are the intangibles, only that the functional form assumption in the 2018 paper is unrealistic.