If someone wants to give a sermon on top of your kitchen table over dinner time, would you object to being able to throw them out? Does an author have the right to come print their work out on your printer, using your ink and paper?
Conversely, there's even more regulations and more importantly, rights, that apply to every company. One of those is freedom of speech, i.e., the ability to not be forced to publish on a private platform the views of everyone.