In software, capture is mostly a speed problem
Almost every SaaS company has forms, a marketing automation tool and a database full of contacts. Very few can say how long it takes them to respond to a demo request at four in the afternoon on a Friday, and that number decides more deals than the form design does. Buyers evaluate software in bursts. They open four vendor sites in one sitting, submit four forms, and the vendor who reaches them inside that window gets to define what the other three are compared against. Everything else in capture is downstream of that fact.
The trade-off nobody wants to name
Longer forms qualify better and convert worse. There is no configuration that escapes this, only a decision about where to sit on it. The reasonable position for most teams is a short form, an immediate response, and the qualifying questions asked by a person in the first two minutes of a conversation, where the answers are honest anyway. Progressive profiling fills in the rest over later visits without asking a first-time visitor to complete a questionnaire.
