The problem with proof-of-work is that in order to make the ledger impeachable, people need to throw real-world value into a hole.
Most folks won't do that unless there was something tangibly "in it for them".
Bitcoin answers this with the block reward - it uses the distribution mechanism to incentivize the busywork that makes the bones of Bitcoin actually function.
The unfortunate result is that a lot of people early on in the project got a lot of coins, and if Bitcoin gets wide adoption those coins will make them about as rich as a Buffet or a Helu, and with an equal capability of screwing up the market if they had cause. (User A in the Shamir paper has 2.8 million BTC -> 28 billion dollars at $10k/coin).
So then... what? If this is a troubling result of the network rules, what rules would have worked better? How do you distribute newly created BTC in a "fair" way, when an anonymous system means that Sybil shenanigans are trivial? How do you incentivize mining, except via block rewards?
I'm sincerely interested in hearing your ideas.
I'm quoting this post because I'm worried you missed it the first time.