The idea isn't ridiculous. You could even start a company called Apple Computers Inc if you could effectively make the case that consumers are not confusing you with the big Apple.
If your theory holds true, then why was Apple Corp able to win $500 million from Apple Inc? Do you really think there was anyone confusing the owners of the Beatle's Record Holdings?
Well, that was a settlement, so the strict answer is "Because they convinced them it was easier that way." But while I wasn't confused, I'm sure they were able to make a case that some people were, or the suits wouldn't have gone on that long-- if nothing else, because why bother?
Now Apple is being ridiculous.