Wow, you seem pretty passionate about it. Did I hit a nerve regarding the topic?NOT A COPYRIGHT ISSUE!!!!!!!!!!!
It's a Trademark issue.
Also, the alternate spellings are almost exclusively British. In the US, 1 word titles in common terms are almost unenforceable as trademarks if spelled correctly in American Standard English. Spelled incorrectly, however, you get enforceability. Not much, but some.
And while copyright laws are similar in the US and UK, the trademark laws have grown rather more divergent.
I really don't know much about the goings ons behind the scenes. I'm just a poor consumer.