I don’t want to enter on the rules debate here.
But all these shenanigans between high level character let me think of a DnD world completely silly. According to the OP the world is lead by a hidden unbeatable sorcerer, unless he has to face another sorcerer of equal level.... A dozen of sorcerers ( or wizard for other) competing against each other can produce various setting.
They may have no time and energy to spend on controlling anything other thing than their competitors.
Or they may use kingdom and empire into their wars making the world a complete chaos.
Or they may want to shutdown from the start any new Sorcerer or Wizard, whichever they consider a possible threat for them. That may lead to a single overwhelming character.
Or they may find a truce, spending time on the rest of the world, but usually such truce is broken in deadly war.
But all these shenanigans between high level character let me think of a DnD world completely silly. According to the OP the world is lead by a hidden unbeatable sorcerer, unless he has to face another sorcerer of equal level.... A dozen of sorcerers ( or wizard for other) competing against each other can produce various setting.
They may have no time and energy to spend on controlling anything other thing than their competitors.
Or they may use kingdom and empire into their wars making the world a complete chaos.
Or they may want to shutdown from the start any new Sorcerer or Wizard, whichever they consider a possible threat for them. That may lead to a single overwhelming character.
Or they may find a truce, spending time on the rest of the world, but usually such truce is broken in deadly war.