Yep, because every team that wins the Super Bowl blows their load in free agency the year they win. Oh wait, usually they win the Super Bowl with rising players and then have trouble paying them because they won a Super Bowl.
Look at the Eagles, for the most part they were homegrown when they won the Super Bowl....now they are having to cut guys or let them walk. It is a vicious cycle. Some teams spend a ton in free agency because they aren't very good. Others think they can get the missing link. Often times it isn't the big time free agents that make the difference.
I hate inactivity and I do think this team could be a few pieces away from making a real run, but panicking before the actual start of free agency and criticizing every move they make or don't make gets tiresome.