You're not really that stupid that I would have to explain that to you, are you? But there you go...
Height and distribution of curation rewards are decided on by consensus, the same consensus that decides them to be paid out in vested form. You are acting as a middle man and using capital to override consensus for a fee. And by offering higher curation rewards, you're giving users who pay you an edge in the struggle for upvotes.
If you want to know how curangel works, look it up yourself.
OK, it's pointless. Best of luck.
^^