> They absolutely are, because an apartment building is a _rival_ good, as are all physical goods, meaning that you and somebody else cannot both own and use it at the same time.

I don't think that distinction is as important as you make it out to be. Private property law allows individuals to own far, far more physical goods than they can personally use.

If were going to talk about abolishing intellectual property, how about lets talk about abolishing private property too? Maybe replace it with some kind of active-use right.

Anyway, lets destroy it first and work the details out later. /s