Half a century of companies suing each other over code licenses suggests otherwise

Instructions can be copywritten just like recipes can.

Code is just a recipe for computer brains

I think it’s still murky as far as AI generated code goes. (IIRC You can’t, but not sure enough to say so authoritatively)

But code historically has been very copyright-able. Oracle’s business model was mostly buying companies and then suing people for infringing on their newly-acquired IP.