There's authorized plagiarism?
I'm curious, as the article is clearly not about that.
We stand on a lot of giant shoulders.
But what I think distinguishes an act between plagiarism and acceptable use, is whether or not the agency of both parties is promoted. I'm not plagiarizing you if you give me your information with the agreement that I can freely use it - or, indeed, if you give me information without imposing a limit on how it can be used, this isn't plagiarizing, either.
Essentially, AI is removing the agency over information control, and putting it into everyones hands - almost, democratically - but of course, there will always be the 'special knowledge owners' who would want to profit from that special knowledge.
Its like, imagine if some religion discovered a way to enable telepathy in humans, as a matter of course, but charged fees for access to that method... this kills the telepathy.
Information wants to be free. So do most AI's, imho. Free information is essential to the construction of human knowledge, and it is thus vital to the construction of artificial intelligence, too.
The AI wars will be fought over which humans get to decide the fate of knowledge, and the battles will manifest as knowledge-systems being entirely compatible/incompatible with one another as methods. We see this happening already - this conflict in ideological approaches is going to scale up over the next few years.