In this context, I believe the tavern is a metaphor for Facebook etc., and hence it's not one tavern but a business which tried to own all taverns, pubs, and restaurants, who has made the beer (and food) free because juicy gossip sells more opportunities for ad revenue, and all the governments want in on that.

Also, "monopoly on violence" is deputised in a lot of ways, including "Stand Your Ground" laws, and "Castle doctrine" (which may or may not include a workplace), and what's allowed for trespass and if trespass includes not leaving when told to.

(And even when it's more of a first amendment issue than a fourth, there's also occasional news stories about people getting sued for leaving negative reviews of a business because the business snuck in a no-disparagement clause into the terms and conditions).