You are right. That is an abysmal beer selection. Will your grocery store not order what you want for you? I ask my liquor store and my grocery store to order me items all the time. Lately, I have had my grocery store get me: Darth Vader espresso creamer, crumpets, leg of lamb, and some Delmonico cut steaks. I have had my local liquor store order me Anchor Steam and Magic Hat #9. They order the products because if I want them then someone else might like them as well. The usually order one minimal shipment from their suppliers which gives me a little supply of what I want and if the product sells well they carry it for as long as they can. Take the Darth Vader espresso which they carried until it was discontinued. It is worth asking them anyway.
The giant 200,000 sqft store is the corner store. They're a 10-minute walk away. Only thing closer is a Wendy's. If I want to wander further afield, there's a "corner store" that's an Indian grocery and produce market. It would not occur to me to check their beer selection.