The form held the logic, and people retyped it
An insurance form is more than fields. It says which fields to collect, how answers are grouped and which questions depend on an earlier answer. The provider's teams read that logic from PDFs, and from emails and spreadsheets, and rebuilt it in the application by hand.
Even once a form was configured, a small change, such as a new underwriting field or a rule that hides a tab, needed someone who understood the schema. The product's flexibility depended on a small group of specialists.