The frontier labs' work is more akin to discovery than artistic expression. An art piece is valued for its uniqueness and individuality, but AI is valued for verifiable correctness. Discovery cannot be unseen and is easily replicable. I think the AI labs are in a tough situation because their work is more similar to fundamental scientific discovery than say, a unique painting or song.
Mendel doesn't get a cut every time somebody uses the principles of heritability he discovered, and Einstein's family aren't getting royalties if you compute relative speeds. I think the frontier labs should expect to be treated more like scientists than artists in this regard.