If your quarterback appears to be franchise-caliber, you must pay him. This is the modus operandi of the NFL as every front office subscribes to this line of thought. Extending Russell Wilson, the most important player on the Seattle Seahawks, had to happen.
John Schneider did it in an intelligent manner too. For the next three years, the contract fits what Seattle is trying to do. This year a few additions are needed, but the Seahawks should be able to make a serious push for the ultimate goal of a Lombardi Trophy. By the time the salary cap hit gets more severe, the cap should have risen exponentially and—as is the nature of QB deals—many more passers will be on much higher deals.