Those who acquired bitcoin in early days got larger share in less price. Later when there are very less bitcoins left to be mined and prices are astronomically high, it will be hard to acquire even fractions of bitcoins. Where is equality concept associated with bitcoin then ?
That on its own is kind of fair game, isn't it? Early believer got to hold big amount of bitcoin because they are early believers.
People who came in late got lesser amount because they believe too late and when things already good.
Remember that early believer faced so many fud and insult by just holding bitcoin but they keep holding it.
Equality doesn't mean everybody should get the same amount of bitcoin, just equality of opportunity is enough.