IMO it is wise for steemit to not attempt to stop "abuse".  I think that users should impose bottom up order upon steemit by forming a consensus as to what behavior is to be allowed, and what behavior is to be punished.  With this approach, the community would ask steemit to focus on developing the platform using simple principles, and it would be the community's job to establish, by consensus, a "moral system" that would enable users to fully exploit the platform as "normal cells" but would establish a bright line boundary between behavior that is deemed acceptable and "cancer cell" behavior that is not acceptable and that is punished.