The situation is complicated by our federal form of government, which was designed to keep a balance of powers in order to preserve liberty.
In addition, "dry" counties often have numerous exemptions for private consumption of alcohol. Private possession of alcoholic beverages is likely legal, but commercial sale of them is prohibited. Some "dry" counties have the equivalent of "bars" which are private clubs where you keep your own alcohol and you are charged for the space to sit and drink it.
Thanks marktwain and sorry for the Off Topic. Wyoming for me is cowboy and Indians, shootouts and barroom brawls and wildlife documentaries. I’m sure the great people there will figure out what’s best for them and probably even have a good time doing it.