[Exofunctor]

Many would argue that IP itself is inherently anti-capitalistic, because it imposes artificial scarcity where it would not otherwise exist and, relatedly, because IP "theft" doesn't actually deprive the "victim" of a scarce resource they created or purchased. Ideas have (effectively) zero marginal reproduction cost.

That's not to say there aren't some good arguments for IP, but they sort of inherently have a planned-economy bent.

[AimHere]

One argument you missed is that IP laws generally create state-granted monopolies, which is something capitalists usually claim to be against.