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 ?
Early adopters own the most Bitcoin and it's a natural. Wealth inequality has always existed and Bitcoin is not an exception. Bitcoin is not a product that you created, it's a product that someone created, so I find it fair that earlier investors and holders have a high share because they risked it at that time.
Btw my concern is that mining became a commercial business and it's not possible anymore for an average citizen to mine Bitcoin at home. It's not very profitable, even with cheap electricity, you need a very cheap one.