The problem is that something like (say) a song is much more than an idea. It’s an idea + work (arrangement, production, performance, etc. depending on the situation). The argument for owning work, at least for X number of years in a limited way (vs. our current system), seems reasonable to me.
the real problem is that the duration of the protection is both too long, and that the same protection is afforded to very small fragments of works too (for example to samples of songs)
of course coming up with a more fair fair use system would help, and automatic royalty revenue sharing, and so on. but of course it's very hard to find a one size fits all ruleset, and also somehow dividing up creative spheres is itself bound to lead to nasty boundary dilemmas.
