I think career trajectory substantially impacts both the way support networks are assembled and cash flow is managed in those respective sports. Playing status on the tour offers potential long term returns but big money on the front end (signing bonus, contract guarantees, endorsements) is incredibly rare. A bunch of guys on tour have early career sponsors (debtors) that own a piece of their earnings, for life. On top of that, you’re on the road all the time, on your own dime. Don’t get me wrong, it can be a very cushy life, but the wad Phil carries around is the exception, not the rule. It’s becoming less so but it’s also the exception for players to come straight out of college and straight into full playing status. There is obviously a major income bump that comes following their first win but the average golf career (earnings) follows a normal distribution by comparison.
I’m not trying to say either formula is right or wrong but the difference seems to come down to cash flow and boundaries. With guaranteed income rare, it’s irresponsible for the overwhelming majority of tour players to keep a deep payroll. If you’re cutting someone a paycheck, that makes you the man. And the man needs to set proper boundaries. Maybe the guys on tour have better hiring practices or perhaps they do a little better job setting boundaries (defining scope of work). Perhaps that’s the result of a more (relatively) normalized career trajectory.
In any case, while each of these sports have outliers, the typically gradual build of a professional golf career seems to make golf the exception to the rule in professional sporting. As @TR1PTIK eloquently conveyed, professional golfers tend to only hire new team members to handle increasing responsibilities. And they are employed solely to simplify and support in various specialized capacities. The dietician is not offering insight on Par 5 strategy, the nanny is not talking about swing plane, the manager isn’t talking about squat programs - they all play their roles so the pro need only show up, ready to play. A toxic entourage can bring down anyone but on the PGA Tour, I just don’t currently see much evidence to suggest more staff, more problems (poor play).