I have a friend who is a VP for Weis grocery stores and they are currently undertaking getting some stores retrofitted to sell beer.
The way six-pack stores, wegmans, and soon to be Weis get away with selling less than a case, is that they operate under a "cafe" liquor license. Don't quote the exact number, but if there are 16 seats in your "cafe"/restaurant you can sell by the individual bottle or six-packs with this license. There is also some stipulation about your cafe/restaurants selling of food, etc. IIRC he said the bar rules apply though, in that you cannot buy more than a 12 pack at one time.
So basically these places are just using a loophole.
If this initiative Sheetz is promoting goes through, it would benefit local businesses, and consumers though. As mentioned, bars, Wegmans, six-pack stores are still expensive.
But with open competition, not a small minority operating through loopholes, prices would come down.
When I moved here 18 months ago from SoCal I was floored... in SoCal I could walk into Ralph's or Vons any day of the week and always find a good craft brew on sale for at least $6.99. Heck, when Hoegarden and Smithwick's made it to Albertson's they ran $3.99 six-packs in my area, and that was only 2-3 years ago!
That is what I hope a law like this could create... the ability to pick up a quality craft brew, not necessarily the DFH or Stone Ruinations, but just the Sam Adams, New Belgium, Alaskan, etc at a reasonable price when you are just looking for a tasty brew to take to a picnic, party, or whatever.
I have signed on and I am forwarding to my local brew buds too!