The morning star has been used for thousands of years to refer to various rulers, not just Jesus Christ. Look it up.
Read it; does it sound like this verse concerns itself with various rulers?
How art thou fallen from heaven, O Lucifer, son of the morning! how art thou cut down to the ground, which didst weaken the nations!
If you wish to understand the Bible, you must read it in context when a word is used; not rely on history's usage as a primary source for meaning. The Bible is God's Word to us and His context is what supremely matters, not the worlds understanding, but God communication to us on what He means.
http://www.youtube.com/user/kytekutter#p/u/16/ySheyYPB4Qo