Code is Law causes the least amount of friction. There is no such thing as "abuse" going by this mantra. If someone wants to self vote, it is well within their prerogative, and keep in mind they can only earn up to what they have invested in the platform. If they want to upvote someone else, they can do that as well. But this actually makes a lot of sense in terms of driving demand for Steem Power. If users see that the can earn more money buy buying more steem, many will. Downvotes shouldn't be free, and they should only be used in extreme cases like plagiarism/identity theft etc. If people want to use bid bots to boost their post to the top of trending, they can do that, if they are willing to pay for it. "You can earn based upon what you are willing to invest" seems the fairest and ironically best demand driver for steem right now. Those that earn the most are likely investing the most as well.