Look at SpaceX. They paid a collective $0 to the individuals who discovered all the physics and engineering knowledge. Without that knowledge they're nothing. But still, aren't we all glad that SpaceX exists?
In exchange for all the knowledge that SpaceX is privatizing, we get to tax them. "You took from us, so we get to take it back with tax."
I think the more important consideration isn't fairness it's prosperity. I don't want to ruin the gravy train with IP and copyright law. Let them take everything, then tax the end output in order to correct the balance and make things right.