The thing is, that in order to enforce the requirement that people should pay per copy, we're lobotomizing the medium. In meatspace, making a duplicate of an object requires work and resources. In digital space, a copy is essentially free (electricity expenditure aside). It's a feature, not a bug. And to restrict it, you need to put in place a lot of legislation and user-hostile technologies that track everyone and make one's life miserable - not to mention destroying the concept of ownership as a collateral damage.
Yes, we can keep the pay-for-copy, copyright-everything model. We can try to enforce the rules of physical world in the digital one. But is it worth the damage it's doing to computing? I believe it isn't, and that's why I think we need to find other ways to pay the creators for the work they do.
It doesn't. But "you need to get paid" != "I need to pay you for the copy of your work". It's only a possible implication. One that we accept in physical world, but that doesn't work well for digital one - hence my point about finding some other way in which you get your money for writing, without me having to explicitly pay for a copy of your e-book.