Yes. And it's structural.
We've created a weird culture of beneficence and abuse where logical move is not to pay.
Why might you ask?
Because a tax which is optional is unjust. As only the fair, the kind and the insightful will contribute. While there will always be abusers. For the vast majority in the middle who follow cultural norms, the question is not "should I do my bit" but "why should I do my bit when others wont".
Since we refuse to understand this. It will continue