There will always be power imbalances in a large society. Centralized systems = increasingly imbalance power
Decentralized = individual potential for rebalancing

Workplaces are not democratic (right - they're not designed to be democratic). It doesn't follow that capitalism creates tyranny.

Unfortunately, capitalism often devolves into corporatism (this has happened very clearly in the US), which is highly centralized, whereas socialism in a large society begins with centralization.