It doesn't appear so that everyone would be free to setup their self-sustained rigg and frolic on their own with realistic prospects, as the mantra of "decentra

It doesn't appear so that everyone would be free to setup their self-sustained rigg and frolic on their own with realistic prospects, as the mantra of "decentralized" (as opposed to a structured environment) alleges. At least, not at a scale that would be decisive for the entire network. Meaning, there's that structured aspect and individual miners come second to this.