Why do you think there's a lack of interest? Because they prefer to stay out of the limelight? It appears that Morrison in particular is working extremely hard.
These aren't "rockstar businessmen" they're low risk and prudent businessmen, for the most part they're people that own HRL Morrison and co who invest in infrastructure which are long term investments, other businesses from the owners include energy companies. The only one in there that you could apply the term "Rockstar" to is Morgan but even that is mainly due to his son.