Biggest? Well, clubhouse has already been mentioned, but just to throw a grenade into the mix, I'll say required caddies.
Caddies are great, don't get me wrong in the right circumstances.
I just couldn't imagine being a member of a NY or Philly area club, required to take one every time I play before 1pm. I know my game better that some guy I just met, play poorly if I don't stay focused and think through shots (vs. some guy telling me to club up).
In addition, I couldn't imagine having to peel off $75-100 per round on top of $10K/year in dues, but that's just me since I'm not a hodl'r of either TSLA or BTC.