You can't seriously propose a solution for the tragedy of commons scenario. I wouldn't voluntarily donate money to the government because it is dumb to make your living worse for statistically zero gain (because a single donation is like that, and no one else would donate). But I fully support taxation (as a concept, current brackets and laws are very inefficient), exactly because it is enforced on all population at gunpoint. I would not join army voluntarily, but I actually was in one because we have a mandatory draft and unfortunately a reason for it now.

The only way humans can function in communities bigger than 100 people is enforcement of resource sharing, or they will be expelled/punished. This doesn't mean that enforced sharing is bad in absolute terms. It is relatively "bad" and inefficient, but the only alternative is chaos and no sharing at all.