Monopoly's are never good. But getting about 1 % of the reward pool is indeed big, but nowhere near a monopoly. So if someone wants to change this, well, then it has to be done by the users and their contributions. @haejin has over 10000 followers that upvote him. Clearly not for the curation rewards, but because of his info.
If we/steemit don't like that, other content will need to be better or contain better info that gets upvoted.
That is how it is...