Taller players-6 foot five and above, will not dominate golf until there are more of them made.
Sheer numbers.
Secondly, players of that height and above often/usually have other sports options, and pressures, to play other sports.
Sure golf is cool, but it's not a sport that one can excel(at a lower level such as high school) in with minimum 3-4x a week effort, as a 6 foot 8 player can in basketball or a large kid in football.
At 6 foot 5, I certainly was towering amongst my peers in jr. golf.
Golf was mostly a niche, nerd sport then, and it wasn't hard to be considered a long hitter.
Those were the days....