Huh, I supposed that’s quite a key aspect and it’s given me a very different way of looking at this. Because Discourse is Free & Open Source I always considered users on Meta as customers. But on the other hand, most are not paying, so they’re technically not customers.
And I guess that definition produces quite an effective line to draw in terms of figuring out ownership: Are most of the users paying for the product? Yes - Customer support; No - Marketing.