Storm Raven said:The 1e PHB supposedly sold about 200,000 units per year for multiple years in a row. That sort of consistency would certainly work fine to support a company.
A small company would kill or die for that. A medium-sized company would, too. I'm still not convinced that that (200K sales of one book per year, and that's it) would be enough to keep Hasbro happy. As it is, D&D may well be worth more to them for the IP, and the related income (from the novels and licensing) than it is for the actual RPG sales.