What was Bob's "real" problem according to Randy?

In Chapter 7, Randy Adderson stops by the Tasty Freeze to have a conversation with Ponyboy before the rumble. When Ponyboy gets into his car, Randy tells him that he won't be at the rumble and is going to leave town. Randy begins to talk to Ponyboy about his friend Bob Sheldon, who lost his life the night he tried to drown Ponyboy. He tells Ponyboy that Bob's parents spoiled him rotten and let him get away with everything. According to Randy, Bob's problem was that his parents never set any boundaries for him or punished him for his misbehavior. Whenever Bob would get into trouble, his parents would blame themselves, and Bob would go unpunished. Randy says that Bob needed somebody to "lay down the law" and tell him "no." Randy believes that if Bob's father would have beaten him with a belt just once in his life, Bob would probably still be alive.