While the two worlds might occasionally meet in battles waged over copyrights, most participants in this sub-thread agreed that copyright violations and plagiarism, though sometimes related, are quite different beasts, as evidenced by the fact that, if nothing else, behaviors normally regarded with disdain in the academic world are treated less seriously in the business world. In business you will hear more on copyright infringement than on plagiarism. And no, they are not the same thing.
Plagiarism is occasion for moral outrage.
It is certainly true that a plagiarist can commit copyright infringement. I'm plagiarizing but not infringing on a copyright.