Jerry used to be willing to write large checks. In fact, he was more willing to throw money around than pretty much any owner. The one thing he wasn't willing to do was let someone else be GM, and then he decided to stop throwing money around. I don't know if Stephen talked him into the current team philosophy or if Jerry came to the conclusion on his own, but they just decided that expensive outside free agents weren't the way to go. Despite teams like the Eagles proving that you can use free agency to supplement your drafts and low-cost players, the Joneses have stubbornly stuck to their philosophy.