Ahriman
Tyrant
If people think that Patronage policies are always worth getting, over other trees, then the Patronage tree is too powerful and needs to be nerfed.On the first point, I always have at least two Patronage policies.
I think if you can easily ally all or most of the city states without a massive economic focus and advantage, then city states don't cost enough gold, or AI players aren't trying hard enough to contest them.So while I may well be okay with a CS being allied to another civ, my overarching goal is to have that CS serve my purposes. More often than not, that's best achieved by allying with it (as long as I have the gold and SP's).
Just because you'd like to have all the CS allied to you doesn't mean that anything where that isn't the case is just a "transitory state", anymore than the fact that you'd eventually like to have every other player's capital means that any point in the game where you don't control all the other capitals is just a transitory state.
For most of the game, most of the CS should not be in alliance with you, and you should be ok with that, since you have other priorities.
It should not be a feasible strategy to be able to conquer most or all CSs that are not your allies.

