Brokeback Watchtower,
A more apt analogy would be the GB is the British monarch and the corporate executives of the WTS and other corporations are the Parliament. The monarchy is an integral part of the cultural, political, and social identity of the society, but the real policy and operational power is in the Parliament.
The fabric of the GB's cloak of control is wearing very thin thanks to the numerous ongoing revisions of its key doctrines. Executive officers at WTS corporations, the vast majority of whom are of the so-called "other sheep," are not blind to this. There are only so many more times the Writing Department can author a revision of the "this generation" teaching (along with more doctrine revisions enforcing the GB's centrality of authority over all Witnesses) before the GB's remaining facade of credibility completely implodes. When that happens (and it will happen), the GB will have to necessarily be dissolved and someone will have to take its place in order to viably manage the foreseeably tremendous fallout.
It's only a matter of time.
But yes. For the most part the GB is just a figurehead. Has been for years, actually, though now so even more than ever.