Steemit Market Manipulation by Steemit whales

I love the steemit concept but of late I have heard that some whales are selling upvotes. This is just so crude, the platform is making the rich richer . Why would someone with millions of dollars on account ask someone with almost zero balance for dollars on upvote ?
Isn't this a fundamental flaw of the system?
If it's fundamental, is it possible to rectify this?