But that doesn't address whether we would all benefit from changing the system.
Piracy is good because it prompts industries to develop non-copyright-dependent means of funding production. Non-copyright means are good because the mechanism of copyright is essentially opposed to the benefit the internet offers.
If we want an increased flow of information: wider distribution, lowering of cost -- what the internet brings -- we can't have copyright blocking each copy, restricting distribution, and raising costs -- treating information as if it is still tied to physical objects. If every digital copy is charged the same as the old physical ones, the economic benefit of the internet's innovation is effectively obliterated. No-one (sensible, in general) would want that, so it follows that no-one can want copyright to remain in anything like its current form.