Yeah, I've yet to figure that one out. Buying Shaw's from Sainsbury for $2.5 billion (cash and debt) seems like it could be a good move in the short run. Shaw's market share in New England (and especially in Maine) is huge. Long run though, I'm not too sure about that one.
As to the empty parking lot - just come on down to Texas, and I'll show you empty Albertson's lots wherever there's an Albertson's. I have one 1/2 mile from my home. Like most of my neighbors, I go there for emergency runs only. I'll gladly drive 3 miles to the HEB when I need to do some real grocery shopping for selection and price.