Multiple club houses.
Multiple pools.
Multiple jacuzzis.
Multiple tennis courts.
In community trails.
In community landscaping.
In community facilites.
Community intranet access.
potentially your high speed cable.
security people.
etc.
The new communities aren’t really SFRs, they a SFR in the equivalent of a resort complex. You pay the HOA for all the features. In my friends place, that happens to include the salary of the person that stands out in the gatehouses 24×7 to verify whom is driving into the complex and make sure your on the list for entry.