Well we haven’t begun the competition yet! Hopefully one clear winner emerges, but that doesn’t mean you cant have 3 or 4 capable quarterbacks on a roster. Don’t forget that Ohio State won a national championship with a 3rd stringer in 2014.
I skip the obvious we aren't Ohio State. Even that year was a fluke for them. You at most have one guy and one guy who will be transferring/graduating at the end of the season.
Teams that have multiple "good" starting QB's are ones that can recruit one every year regardless of who they already have on the roster.
Take Penn State. They have one top 25 level QB and a bunch of dreck becuase their other expectes starter transferred last season to be #1 at Kentucky or some such place. They're back up(our new guy) couldn't be trusted in actual games and was demoted for a true freshman that they had no intention of playing.
They now have a stud coming in this year, so they are back to par with a graduating #1 to be replaced next year by this new guy, plus they will likely recruit another stud just in case this year's recruit doesn't pan out.
You can figure out for yourself which of the above plan doesn't work for us.
We get the cast-offs and hope to get lucky. I'm on board with Mora buying as many lottery tickets as he can. I'm just not naive enough to assume one of those is a grand prize winner. I'll settle for competently serviceable whomever it is.