Copywrite protected keyword? Sounds, interesting but impossible to manage, right? Yes, I do think so. We cannot get keywords with copyrights, this is not possible.
However, this would ever happen to be true, copy right protected keywords can allow some controllable site density on the web. We have hundreds and thousands of site uploading every day. This would take more than an average human life even to click page by page each of them. No doubt, we have flourished the web with good contents and bad contents. We no longer show any respect to individual privacy, confidentiality is no longer confidential. Every thing we made a simple one click away, both the good and the bad. If copyright would have been enabled I can surely say this would offer some control over the web.
Controls that can make web hundred percent good than what it is at present. Again, we have another picture of the copyright. Copyright may initiate improper exercise of the right. Since search engine optimization is kept open on the basis of your brain works and labors you will have make your own position within the fierce competition, it is still somewhat fair enough!
Now it is more important that the SEO competition can stay on its ethical track and get a healthy SEO competition grow eventually.