Hard to say. Though even if he didn't improve in that situation they would still have had Bosa and a high pick this year for a shot at Burrow. Hindsight is 20/20. They are probably happy enough with Murray who will probably develop into a pro bowl level guy with Fitz and Hopkins to throw to.
I think the leagues in a great place with all these young qbs. We've got Murray, Jackson, Watson, Mahomes, Dak, Wentz, Goff, Jones, Lock, Allen, Darnold, Minshew, Mayfield, Jimmy G and potentially Burrow all 28 or younger. That's half the teams in the league with a serviceable starter 28 or younger, and a lot of these guys are under 25.