LSU and USC fired coaches near the beginning of the season, and there was never a comparison of "let's wait a week and we can save millions". The buyout had NOTHING to do with the timing of those decisions.
Florida's timing was because the team had given up on Mullet. Literally. You could see it on the field. And they played harder and won this week without Mullet.
Whether you like it or not, Miami has hung together with Mario still coaching us, they never quit on the coach or the team.
So let's try to compare apples-to-apples and oranges-to-oranges. The LSU, Florida, and USC firings did not involve POSSIBLE timing that would POSSIBLY impact the size of the buyout, where the decision-makers just said "fvck it, let's pay millions extra just to make our fanbase happy". Just didn't happen that way.