There's many versions of happened with Pop and Hill. One is the one you described. There was another version about a coup by Avery Johnson. But none of that matters. The Spurs didn't have Duncan then. Pop put his ass on the line regardless. Did he and the Spurs luck out? Sure.
I love Larry Brown, and think he's a great coach, but this is a guy that was flirting with other teams after winning an NBA Championship and while he was heading to his 2nd NBA Finals. The longest he's been with a franchise was 6 years, with Philly, and after that 4 years with Indiana and our Spurs. He can't stay in one place, it's been the big knock on his otherwise great career.
Even Phil Jackson missed the playoffs with prime Kobe. Star power matters, but you also need a solid cast around.
So what's the philosophy that's going to improve on 50 wins a season year after year, 4 championships and 5 NBA Finals for a small market team?