Copyright is necessary and isn’t the problem here. What is the problem is Youtube’s refusal to require any verification when a copyright claim is made. YouTube has essentially created a society that doesn’t abide by due process because it’s a virtual society and therefore isn’t required to follow the same laws that physical societies are held to. This is a symptom of a much more dangerous problem - as we exist more and more in the online world, we are subject to whatever contrived laws the owners of that world decide to create. Those laws have serious fallout in the real world, like complete loss of income due to bogus copyright claims.