I think this a factor in the U.K. When I was reading about the knitting wars and appropriation, it did get me thinking about the traditional knitting patterns of poor, rural fishing communities around the U.K. I don’t think they benefitted from the commercialisation of those patterns? It’s complicated...where is the line drawn between appropriation and cultural exchange?
I think this makes a lot more sense if you think of it as a result or side effect of a particular facet of capitalism we have allowed.
If you think, where does this idea that someone or even a commuity should profit monetarily from some concept they have produced come from, it's revealing. Up until fairly recently in human history, if you had a great idea, you profited from the advantage it gave your community. A great knitting pattern might keep you warm, maybe at less cost or created more speedily, and maybe you enjoy the beauty of it too. You could of course sell the things you knit to people. If no one else knows how to make it you could charge a premium, but as soon as someone figures out how to do it, well, the idea also belongs to that person.
This was true of all concepts and innovations, be it technology, or a song, whatever. Someone else can build it, someone else can play it, and get the benefits of doing so.
This all changed once you had things like patents or copyrights. All of a sudden, it became possible to own an idea, and materially benefit from that ownership by selling access to rights to make it, or sell the items made, and no one else is legally allowed to do so. Part of the argument for this system was that it would allow people to capture the financial benefit of their labour, and connected to that, incentivise new ideas and technologies.
Even in this system though, it's recognised the the ownership of ideas is something of an artificiality, and so rights were limited, usually to approximately the lifetime of the creator. So if you write a great song, or develop an amazing drug, and you can benefit, but you can't pass down the ownership of the idea to your heirs.
So old knowledge or cultural knowledge, they just don't really fall under this system. And this is a good thing, though I have heard people argue that it should. But it's worthwhile to consider that we consistently see corporate interests in making the periods that they can benefit longer, and that is because the ownership of ideas, or information, in a capitalist society has the same effect of any other kind of ownership in capitalism - it tends to accrue to the already wealthy, more and more over time. Imagine if we really did try and figure out which cultures "owned" which ideas, or suddenly the decedents of Bach had to be sent funds whenever anyone played his music. While there might be some particular marginal communities who would benefit, overall the benefits would go to the communities and families who were already rich and power. And whoever ended up owning the most important ideas, they would be set up as elites for a very log time indeed.