The truth is, it's so hard to find the right QB. It doesn't matter if they're stars in college, it's no guarantee of success in the pro game. There have been too many drafts where we've been told that guys like Darnold, Mariota, Winston, RGIII, Vince Young, Jamarcus Russell, Ryan Leaf, Jake Locker etc etc, were the next big things, only for them to crash and burn.
You have guys then like Brady and Rodgers who entered the draft with little fanfare and look what happened then.
Even if the right superstar QB is taken and lives up to the promise, teams still have to make sure he's surrounded with top calibre talent, especially in the O Line. Case in point was Andrew Luck, the best QB to come out of college since Manning, Rodgers and Brady yet the Colts stupidly failed to get him the protection needed and he was battered into early retirement. Look at Burrow, the Bengals don't have the talent upfront and he was getting killed and in his first season had an ACL/MCL rebuild to go through, he's barely been in the league 5 mins. Look what happened Troy Aikman when he got o the Cowboys, the guys were getting murdered his first season before Johnson built the Great Wall of Dallas.
It really is a crapshoot. Who will succeed, who will fail....Lawrence could just end up another RG3, Winston, Young etc. And the next stellar QB could be buried out of sight in the 5th round.