In case this isn't trolling, it's valuable to any users who have a question that was previously answered on the forums, and to any users who invested time and energy answering said questions. Neither of these show up as a revenue stream, but instead impact customer retention and onboarding - the absence of community support is a major negative when making a purchasing decision as a new customer.
These things are not monetizable but are foundational to monetizations. It's like office ceiling lights. You might as well forgo buildings and gather naked employees with laptops in parking lots from such perspective.
