Equality was never meant to mean equality of outcome. It's supposed to mean equality of opportunity. Very different thing. Everyone has the opportunity to own some Bitcoin, most haven't taken it.
There will always be a Pareto distribution of wealth. And I'm not just talking about money. Wealth is all of the worlds resources. This happens at every level. There will always be richer people, companies, states and countries on this distribution curve.
That said, everyone can still benefit from incorruptible money. For the first time in history we've got a money, a measuring stick, that doesn't inflate at the whim of whoever is in control. That's a pretty big deal even if it only becomes the foundation of the financial system in the future.