Hashirama and Obito are actually really interesting examples.
Obito needs people. He needed the Akatsuki, Pain, the Zetsu army, memories of his past life, and so on to get where he did. However he still believes that it is with his own power that he can change the world which is why he ends up fighting alone. He's a person who needs others but desperately tries to work alone because he simply feels like it is up to him to fix the world. Even though he draws his power from his eyes like Indra it is obvious that his personality fits Asura.
Hashirama is on the other side of the pole. Hashirama doesn't, strictly speaking, need anyone. His power eclipses anyone of his time and not even Madara could take him in a fight. However Hashirama desperately wants people to get along with each other and seeks to get people on his side. He sees the power in teamwork but he himself doesn't seem to really need to work with others. So like Obito, who tries to do stuff by his own against his nature, Hashirama tries to force everyone to get along through forcefully flexing his chakra. And unlike Naruto, who doesn't seem the type to ever kill his friends, Hashirama actually does strike down Madara, confirming that Hashirama really did not need Madara to keep the village afloat.
So what you're left with is one man trying to change the world despite his need of aid which ultimately, while a threat, can never succeed because he tries to do it by himself. And another man who tries to force everyone to work together but because he is by nature so far above everyone, must rely on his own power a bit more than is necessary. This makes it so when he is killed(by god knows what) a power vacuum is inevitable and the world is still stuck in war.
And that's not even addressing Sasuke who is in the most interesting position(that Kishimoto will probably ruin by making him the reincarnation of Indra).