I don't disagree what DLS has accomplished has been great. It has. But, they have a unique advantage over every other private and public school in the Bay Area. You are incorrect about Bishop O'Dowd and Marin Catholic. Bishop O'Dowd has too compete w/ Moreau HS in Hayward (less than 15 miles from BOD) and they also have too compete w/ St. Marys of Berkley and Salesian also of Berkeley (Both less than 10 miles away). That is 4 Private high schools all w/ in 15 miles who also happen to play HS Football competing for HS football players. And Marin Catholic is less than 20 miles from San Francisco and Marin County residents send a lot of their kids to the SF Private schools - Sacred Heart, St. Ignacios, Riordan, Lowell. Again Marin Catholic has 4 very good private schools just 20 miles away who compete w/ them for private school football kids.
Coach Lad was smart and talented - he built a dynasty and had ZERO competition from other Private Schools who play HS Football for a good 40 mile radius. Any parent who has a son who they want to go to a private school and that boy wants to play HS football - AND they live in the already mentioned cities of Tracy, Pleasanton, Dublin, San Ramon, Lafayette, Walnut Creek, Pleasant Hill, Martinez, Concord, Antioch, Pittsburg - THEY have ONE Choice to make that is closest to them - DLS. Every other Area in the Bay Area has at least 4 or 5 private H.S's who play HS Football competing for football players. And when you add up all the DIV 1 football players DLS has had over the years compared to other public or even other private schools - this Monopoly of an extremely large geographic region is magnified and proven even more.
They routinely have 2 to 4 D 1 players and in some years it is as high as 4 to 7 D 1 players. All their D 1 players play both ways - when they have 4 or more - that is almost half their high school team starters who will go onto play college football. Truly an amazing advantage.
But, Coach Lad has and did win against the teams from other areas who had similar talent. And I am not saying Coach Lad was not a great coach. He absolutely was a great coach. For him to accomplish what he did is truly amazing. Quite Frankly.
You have to take into account population density as well. I agree Odowd has to compete with Moreau to the south and St Marys to the north but that may not be as big as geographic area but population wise they have a big pool. Marin Catholic is losing a very small number of kids to city schools. Have you ever tried to commute across GG Bridge or drive 580 corridor in morning? Its a different setup than Brentwood to Concord. I get your point, DLS is only option for Contra Costa kids versus their are options for other private schools.