I think a lot has to do with race and environment. I was born in 1948 and started playing organized sports when I was 10 years old for the Jamaica Youth Organization in Queens. Our teams consisted of White, Black, Puerto Rican, and Chinese players. We were all just neighborhood kids just looking to play sports and have fun.
Unfortunately, my athletic career ended when I graduated from high school in 1965. During the 1960's, 70's, and 80's basketball was truly the "city game". No matter where you lived, you could always find a park to play in with good competition. I even used to travel to Rockville Center to watch the tournament legendary St Agnes coach Frank Morris ran. Two of my good friends still rave about how happy they were to play with Frank Alagia, since he was a true point guard and when it was just them in the backcourt the ball didn't get shared as much, lol. Rick Marsh played at Manhattan then with the Warriors and Calvin Bruton played at Wichita St and then in Australia, where he still lives and is a member of the NBL Hall of Fame.
I have had many conversations with Frank, Brian Mahoney, and Billy Schaeffer about the lack of Caucasian ballplayers in New York City and Long Island. It was pointed out to me that Lacrosse was now the popular sport on Long Island.
Paultzman and I belong to a Facebook group, The Bronx basketball Hall of Fame. In our era there were many great Caucasian ballplayers at various high schools throughout NYC and Long Island. This caused their friends to attend their games and support them, while developing a love for the game. The younger generation does not appear to have this connection with their classmates who play basketball, therefore, they are not fans. Also, inner city youth view basketball as a way to get to college and improve their situation in life. Kids growing up on Long Island, are not as reliant on a sports scholarship to attend college.
I believe that the apathy a lot of kids have towards college basketball is that they haven't grown up with the game. Howevr, as you stated, things will improve for St Johns with Pitino.
Fun facts: in high school, my favorite college player was our very own Kenny McIntyre. The peer whose game I liked was Jimmy Hayes of St Agnes who graduated in 1965 also,went to Prep School, then Boston University, and the ABA.
Wishing everyone a Happy, Healthy, and Blessed New Year.