From my point of view, I would think of "balance". Just like bookkeeping, we have to balance the debit and credit. Same in the story, agent Smith gained power because the architect wanted to balance the world while Neo was overpowered.
It can apply to the real world, let say we have duopoly in the market. If one is dying and the other one is overpowered, the government might interfere in between to prevent monopoly (which make the consumer suffer more because they have the full price control)