Its because you get them on very cheap Rookie contracts compared to the 2nd contract. when that comes up see if someone will trade for them, if not... draft another one. That is what has happened to RB's.
More and more teams have "their" guy at QB who is gonna get paid. When that happens across the league, ALL other salaries will go down
I disagree. The high cover 2 shells take out most fast WR's and force underneath throws. Look at Elway, made superbowls just slinging to his WR's but it was when he ran the WCO under Shanahan and ran the ball, threw to TE's did he finally win a superbowl.