A product could already have the engineering bits in place but without a landing page calling out that very feature or usecase, sending traffic to a mismatched

A product could already have the engineering bits in place but without a landing page calling out that very feature or usecase, sending traffic to a mismatched page is a diservice. People click an ad to learn more, if they are presented with a specific use-case but land on a generic marketing page they will click the back button.