If the authors of the information wanted to get paid they wouldn't submit their intellectual property to a website that provides said information for free.
Like I said either everyone pays or no one does. You can't have it both ways.
Actually I'll tell you how this is going to work. Sites like Wikipedia, GitHub, stack overflow, ext will have to force every one of their users to open a personal account and conduct constant verifications to make sure they're not AI's.
From what I've seen on the internet people don't like this.
So again it can't be both, either it's all free or it's all paid for. There is no in between.
Look, I know what you want to happen here and I even agree with it on the surface. Cooperations need to pay their fair share and many of them don't. But I don't think you understand the implications of what you're asking for.
Let the AI's learn for free because in a few years it won't matter anyway.
We're on the precipice of a technological singularity and hopefully in our lifetimes the function of a monetary economy will no longer be relevant.