I dont think your first statement is true. Are magazines required to compensate their writers? I don't think that they are, it depends on the license applied

I dont think your first statement is true. Are magazines required to compensate their writers? I don't think that they are, it depends on the license applied to the original content. If there's no license they can only print it if Fair Use applies or copyright is reassigned. We cannot examine the other issues when the assumptions in your first two sentences are in question.