Technically speaking it will be easy to change the rule of the game by the Steemit team.
For example, a person with a certain amount of SP could upvote someone one time every 3 days!
Limit the number of posts you can make on a timeframe of 24 hours to 5!
Yes I believe many rules can actually be implemented with consensus, but it is just sad that someone can't just learn to get along instead of having to be forced too.