Or.... they are a sign that the team couldn't afford to do more (e.g., compete for Thomas, Clements, a guard, etc.).
Fletcher was not inexpensive. You spent an extra $4 million a season to upgrade to Fletcher over Marshall... a move that was not necessary.
And word from Leonard Davis is that Washington tried to match what Dallas was offering but couldn't afford it. So, in other words, the team was trying to spend a lot, but just couldn't. That sure doesn't sound like they "learned their lesson." In fact, I would say them letting Dockery walk and then trying to outbid Dallas for Davis is pretty much firm evidence that the team hasn't learned a lesson.