Bitcoin is not a solution to oligarchy. No money can be. It is a constraint on monetary manipulation as a source of oligarchy.
Wealth concentration without coercion is not a systemic failure and the ability to “buy everything” is limited by market dynamics (and absence of state privilege). Permanent, unassailable dominance is IMO unlikely without institutional support.
Expansion at that scale historically depends on credit expansion, not accumulated savings.
So, no I'm not worried about that.
