So true...
It's not the only reason, but I can't help that some of it has to do with the fact that the commerce comes after the competition as a priority.
When there is no purse to meet, regional charity to endorse, and labor and material machinery to produce for their orchestration;there's no need to ampitheaterize 40,000 spectators around a par 3 Beer Garden.
When there is no treasury is to be won and there are only perfunctory baubles to be sold; the home crowd and the competitors find that one can't denigrate or fist pump an opponent - because its realized fundamentally, that without the opponent there is nothing - no game to be played, no exhibition to make, or competition to contest.
Why would you - player, partisan or gallery - humiliate or interfere with the very thing that frames and incites your own activity?
In the professional golf world, the individual player prospers at the expense of the opponent, too many in the crowd feel their patronage entitles them to be part of the game, and the advertisers understand that controversy and "pitted battles royale" bring eyes to their wares and to their branding(s).
Additionally in that world, there is enough of a talented mass of players, where no one opponent's victimization will mean the fall of the money-generating enterprise. If Tiger fist pumps on Sean O Hair, so what? There's 15 Nick Watneys right behind him, besides the World Top 25. If the crowd disapproves of Sergio and shouts dis-tempers, so what? There's plenty of the Euro-class right behind him, that they better appreciate.
Lastly, it's sometime nice when a thing is self-sustaining, under the radar and there's little to get wrapped up in. With amateur players we get much, much, less of the bios, the interviews, the statistics, the history of their failures, the detailed, withering critique of their swings, their comportment, their decision-making.
And t's all a parallel thought to why media critics, such as myself, don't think we ought to have entered into this era of tournament-wide broadcast (read: advertising recoupment) of the Little League World Series, HS football and basketball games, etc.
It's a good thing, we have that balance, with events like the Walker Cup, and I so appreciate the irony of what you've mentioned here DC.
But irony is the unexpected result; based on what I've seen in my life...the result is not so unexpected.
cheers
vk