No disrespect, but Marion Local and Kirtland and Coldwater have the "dudes". Madison had a class go through recently that allowed them similar success, but that was an anomaly. Waynesville and Carlisle have both had successful groups go through. I also know that all three have had some really good football coaches that have done the exact things you listed above. It's probably unfair to compare Waynesville, Madison and Carlisle to ML or Kirtland. They are two of the most successful high school football programs in the history of the state. If you think those schools, don't have a better roster than 99.9% of the other schools their size I would say you're wrong. I would argue that 9 times out of 10 vs. the teams they play they absolutely have the best "dudes" on the field. Throw those teams on the field with a team that was a DIII final four team and you might see a different result. I don't totally disagree with what you're saying. A good coach can build a solid program from top to bottom and make them competitive. I would also agree that the best coaches will get the absolute maximum amount of ability out of their kids. But when a school has 500 boys to choose from and another has 175, there is a clear disadvantage. In a perfect world, what you're saying is great, but if it was that easy everyone would do it and every state in the country that offers football wouldn't have multiple divisions based on the size of schools participating in athletics. To suggest that larger schools playing schools 2 or 3 divisions smaller than them year in and year out for a league championship don't have a clear competitive advantage is misguided, and again I don't care who the coach is.
Also, Urban Meyer had the "dudes" at BG to compete in the MAC (had one of if not the best QB in school history and definitely the best player in the MAC that year). He had the "dudes" at Utah to compete in the Mountain West (had a first round draft pick at QB). You put either of those teams in a Power 5 conference they might finish with 5 or 6 wins. He wasn't winning national championships until he went to schools that allowed him to recruit the kind of talent that wins national championship.