If DeSantis beats Crist no matter by how much, he is staying the full 4 years in Florida. DeSantis' main focus is overhauling education in Florida. He wants to free young minds from the "Political Correctness" they are conditioned with at a young age.
If you want him running for Pres in 2024, Crist needs to beat him. I want Crist to lose because DeSantis' mission is vital to the future (Which I hope other State governors emulate what he is pushing to do).
If you want him running for Pres in 2024, Crist needs to beat him. If Ron DeSantis somehow loses to Charlie Crist, he's finished with elective politics. He'll never run for anything again.
I'd also add that DeSantis losing, and we'll know early as Florida tends to count their votes quickly, would be the harbinger for a massive GOP catastrophe across the board. Everyone with an (R) after their name would be in serious trouble. We'd be looking at a Blue Wave midterm sweep.
At that point, it wouldn't really matter who runs in '24. There wouldn't be much left.