Market context
Manufacturers usually sell through more than one motion: direct to large accounts, through distributors, and sometimes to specifiers who never place the order themselves.
Each of those needs its own audience definition and its own messaging, which is why audiences are first-class objects rather than campaign settings.
Specifier vs buyer
The person who chooses the product is often not the person who buys it. Both can be modelled as distinct buying roles in the same segment.
Channel-safe messaging
Separate audiences for direct and partner motions reduce the chance of a campaign undercutting a distributor.
Technical accuracy
Generated copy references attributes present in the product record, and unverified claims are flagged for a reviewer.