Even if that happens, there are 31 other teams in the NFL and someone will pay big money. If Mahomes wants $40 mil a year and the Chiefs refuse to give it to him, there's no chance he goes unsigned by all other teams. Some team will find a way to pay him the money.
He missed one early in his career. I only remember because I was there. A dolphin hit him under his chin and broke his jaw. Mark Riypen came in for one snap fumbled the handoff to the back and manning was back in there the next series.
Ballard said this about the new QB:
“Look, we want guys that represent the horseshoe and the robot can flat out play. When we watched the film, we were just blown away. There was about 5 other robots on our list to target and it just worked out perfectly.”
I agree, but my point is that eventually (and it will be soon) a very good QB (or his agent) is going to ask for so much that the team will have to decide if a great QB without money for quality pieces is worth it..