Yes, I experienced this years ago on my first trip up to PA. In Florida, beer and wine are the same license, so grocery, restaurants usually have both, with hard liquor that's a separate (harder to get license), so that's typically limited to liquor stores, or restaurants/bars, who serve everything. Beer and wine you can get _everywhere_, and one of a major grocery chains even has dedicated liquor stores that are commonly connected right to the main grocery store.
Up in PA, beer specifically (not wine), is sold through "state stores" ... from their appearance, I'm not sure that these aren't actually run by organized crime.

Seriously, they're like these small hole-in-the-wall, with stacks of beer still in cardboard shipping boxes, a few things chilled, and a bunch of shady looking guys that respond with "YO!"

Liquor stores have liquor and wine ...groceries sell beer, but it's like through an adjacent shopping area, kind of a cafe, with separate registers. I believe they're changing some of this, but that was the case as of our last visit a few years ago.