The builder collects the thing a form cannot
From PixelLumo
Anybody can tick a box saying they want pricing on the page. Dragging pricing above the fold says something a contact form never gets out of people, and the order of the blocks turns out to be the most useful thing the builder collects. Every list in it is deliberately closed — the moment it can express an arbitrary layout it stops being a way to start a conversation and becomes a page builder nobody asked me to maintain.