Just download a mining program and run it on your computer. Voilà, you now have "a say" that is exactly equivalent to your say in the policy of republican institutions.
1 vote for a poor person = 1 vote for a rich person (ideally). In mining, the more mining power you have, the more "say" you have. One stays constant, the other scales. Don't you think that is an important distinction?
But it's not your one vote that makes any difference, It's how many votes you can influence. And that's all about privilege and money. Campaign funding. Lobbying.
So you're saying, cryptocurrency and fiat currency are the same, because you don't have a meaningful say in either one, unless you have a lot of money. Yes. True.