Let me stop you right there: no one is claiming that buying a book gives you copyrights to its content. That's a strawman.

When you own a book, you own that copy of it. You can do whatever you like with that copy, short of distributing copies of it. You can sell it. You can lend it to friends. You can leave it laying around a doctor's office for a stream of people to read. Short of distributing copies of it, it's yours.

Sony claims you do not own your copy of a game, merely the right to use it until they decide otherwise. That is fundamentally different than when buying a book, or CD, or DVD.