What does the proverb big fish eat little fish mean?

The proverb "big fish eat little fish" refers to the idea that larger, more powerful entities often dominate or exploit smaller, weaker ones in various contexts, such as business, politics, or social structures. It highlights the inherent inequalities in competition and survival, where the strong thrive at the expense of the weak. This can serve as a commentary on the nature of power dynamics and the challenges faced by those at a disadvantage.