The level of delusion and entitlement of some people is simply to hard to understand for me.
If it was a free service by a mom and pop shop with "use at your own risk" in the agreement, then yes, it would be entitlement.
However, there exist people, for whom 90% of their communication happens via Facebook or social media. And it's not even by choice, kids are born into it being the status quo, and if 100% of your friends are using it while you're growing up, chances that you won't use it too are slim to none.
Thus, the company needs to hold responsibility for providing open communication. Censoring posts about their competitors goes against that.
Note: I don’t use Facebook so perhaps I’m missing something.