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 ?
Equality between who? The rich and the poor, or just everyone in general? It is impossible for everyone to have the same amount of bitcoin. If it happens that way, bitcoin will lose its value. Bitcoin still has value because of scarcity, and it is good we let it be this way.
We shouldn't be talking about equality right now; Satoshi never promised us equality. What we should be grateful for is the fact that everyone, irrespective of financial status, can actually buy bitcoins with ease whether at a higher price or not. That's freedom.
Have you asked yourself: are all those who bought bitcoins during the early days still holding their bitcoins to date? Those bitcoins have probably changed hands countless times. Be grateful you can still get some bitcoins right now if you want to.
In some ways the launch and adoption of Bitcoin was originally intended to solve the problems of financial risks like inflation.
Still some argues that Bitcoins fixed supply and expected rate of adoption only replaces one form of centralization or monetary control with another form of inequality of which is wealth concentration or redistribution among early adopters and large pocket or large institutional holders.