Have you considered the possibility that Apple simply wouldn't release the source code at all, if there were no copyright protection?
To keep companies from "hoarding," as you put it, would require a sort of negative copyright, where they are forced to escrow their source code for public release at the end of the copyright term (which would also need to be reduced). This is an interesting idea; if you want copyright protection, you have to vouch that you will release what is being protected at the end of the term. Sounds fair to me. If you don't like it, you'll have to rely on trade secrecy instead.
He's suggesting 10 years copyright. Not no copyright at all. Seems perfectly reasonable.
On this Veterans Day, I would like to thank all veterans for serving our country for protecting our freedoms and way of life. Without these brave men and women, we would not be the mightiest, richest, most powerful nation on Earth. God Bless America.
How original. Brought to you by Wal Mart!