Its not unfair, early people who adopt bitcoin took their risk also and spent time and money just to get what bitcoin is now or in the future, well they can still acquire bitcoin but it will cost them so much or they could get it a penny of it from other people but it wont make them rich unlike the early adopters.
If the OP thinks it is unfair, then it should be unfair that those who bought stakes in Apple or some companies and are doing well now should not be doing well. Early adopters are always the ones to take the higher risk and for anyone who thinks that is unfair, such a person is really not ready to take a step now.
Gold is not the same price it used to be 50 years ago, and if I think it is reasonable to get gold at the same price that those who got in back then did, and then I must really be very dumb and stupid.