Is there really an interesting question here, though? The art world has for years had no difficulty trading in immaterial works of art, or, for example the righ

Is there really an interesting question here, though? The art world has for years had no difficulty trading in immaterial works of art, or, for example the right to exhibit a performance. In the case of something simple that anyone could reproduce, like a very simple performed gesture, what actually gets sold is the right to assert that a given performance is actually an authentic, canonical instance of the work. I've never encountered any interesting nuances or complexity when it comes to the sale of conceptual work. It is just very straightforward.