Those numbers are interesting. Looks like Steemit works the same as funds in the real world work. The ones at the top have the majority.
The only problem I have with hajin upvoting himself constantly is that ( from what I seen ) he only upvotes himself / upvotes others very little. But ultimately that is his choice to make.
The way I look at it is .. he invested and is currently reaping the rewards of his investment. He is free to do so just like anyone who wants to flag him is also free to do so.
As for taking money out of the reward pool, that is what we are all here to do. We didn't invest to just keep our funds on Steemit forever. We want a return on our money / time. And as you said .. the reward pool belongs to everyone so each individual gets to decide what to do with their share of it.
And that takes me back to the bid-bots. I don't view it as stealing. When you pay for a good and receive that good or service it isn't theft. The buyer gets a return on their purchase. Didn't like the return ? Don't use the service again .. just like you would do in other aspects of your life.