Sure, but we get into a weird place if we try to argue that every thing that possibly might be written must be written - no copyright law is strong enough, we h

Sure, but we get into a weird place if we try to argue that every thing that possibly might be written must be written - no copyright law is strong enough, we have a moral obligation to buy books we have no interest in, etc etc. So why is the current copyright system the exact correct system for getting people paid to write, where any stronger or weaker would be bad? I can think of at least a few other possible systems that would get people paid to write as well - maybe an entirely different set of people, so some things would get written that aren’t today and some things that would get written today aren’t under that system. How can we evidence that our current system works best?