But it's still overseen by a board of directors, even if they haven't actually used their powers and I would assume that since it is run by the same club from year to year that it would be taking place under the same incorporation. The structure looks more like a corporation (board and shareholder elections) rather than a succession of individuals or small groups assembling a team each year out of variously experienced people with the goal of getting one event run.

Meanwhile in Denver Linda Nelson has been con chair for 16 years (and she'd been con chair twice before that). At this point though theoretically someone else could bid no one would and if she decided to step down I rather think that the con runners would meet to select a new chair rather like a papal conclave from one of their own or she would have been grooming a successor.

And most cons I've heard of have a corporate structures and incorporations in some fashion that continue year after year until the con dies.