Advocates for a Soviet style centralised economy exist, but they aren't common.
State-owned liquor stores pay rent or own property.
Grocery stores are a business with 5%-8% margins, how much more should they cede?
The more simple question in my opinion is whether state run liquor stores are an overreach. The industry is already heavily regulated as it is, state stores sure seems like anticompetitive behavior.
Marx himself, prescriptively, wasn’t all to specific beyond the distant end-goal stateless system and the immediate next steps in contemporary states (particularly, in terms of a detailed agenda, Germany, but he made some commentary on some steps other places.) But even where he was, plenty of people that share his critique of capitalism either don’t see his intermediate term prescriptions as realistic areas of concern for organizing current effort, or don't see them as mevessarily desirable at all.