The U.S. isn’t a democracy though. It’s a constitutional republic. Representatives actually make the decisions in the U.S. and we choose our representatives. This was a very deliberate decision by the founders (and TwoBitIdiot alludes to efforts later on to reverse this in his post, most notably his comment about the 17th amendment). So the equivalents in Bitcoin would be- running your own node, choosing to support different mining pools, using different wallets/exchanges. With a system where all users can vote directly on protocol changes (similar to what systems like Tezos or maybe even Dash have/propose) would be more akin to democracy and could risk the dangers of slim majority populist movements.