Sure, it's possible to build a winner here. And yes, we need better development. But the programs you mention have inherent advantages that Syracuse does not have.
Boise is successful because there's a lot of meat on the bone in California and Texas (I eyeballed their roster and estimate about 50% of the roster is from CA and 20% is from TX). They obviously have pipelines built, but there's fresh markets in CA for talent that Florida does not have.
Cincinnati is overwhelmingly Ohio players - and while Ohio no longer has the elite players it used to, forcing Michigan and Ohio State to look elsewhere - there's plenty there for a G5 state school to swoop in and construct a good team.
Every school is different. Yes, Syracuse can win and recruit better, but you can't compare what other schools are doing and say "why can't Syracuse do that" when it's likely a different situation.