Intellectual property

[Kiviuq]

Of course anarchists oppose intellectual property as much as any other type of private property, but it seems to be of a fundamentally different character to other types of property because it isn't physical. 'Usufruct', the anarchist notion of possession, can surely only apply to physical things: it apply to a machine, but not to its design; it can apply to musical instruments, but not to a piece of music, etc. If the products of people's labour are the collective right of all humanity, then do we deny inventors any control over how and by whom their invention is used, and are creative works subject to being remixed and rehashed regardless of what the creator thinks?

Is it possible that a syndicate in an anarchist society might develop a new technology but keep it to themselves, so creating some sort of inequality, and would this be a problem?

I ask these questions not because I support intellectual property but because so many people seem to express the view that they should be entitled to some sort of control over the use of their inventions or artistic creations even in the absence of a commercial motive. I feel I'm misunderstanding something.