If the environment is created by the person, it is still fair that they change the rules of the environment - so long as it is communicated and they're not misleading, manipulating, or violating anyone's rights.
Others choose to participate in the environment or not. Their choice is also fair.
The problem is when the environment is presented as something other than what it really is, or when those that are in control feign community interests "trump" theirs...all the while using company assets to silence those they do not agree with. That is what people are having a big problem with regarding Steemit as it stands.