Then go back to their roots as a local store that keeps certain niche products in stock. For example, when I need parts from microchip.com, I should be able to have them sent to my local Radio Shack and pick them up the next day (if they aren't already there). So basically their business model would be to be a local subsidiary of amazon.com that specializes in up and coming technology. The information about who’s buying what and what they are building could be more valuable than sales.
I guess to summarize they would be a farmer’s market for technology, where people could buy shelf space and showcase their creations, which as far as I can tell doesn’t exist in most cities. We came close where I live during the Great Recession when big box stores were closing like crazy and the space was converted to bazaars. Unfortunately there were a lot more nicknacks than crafts because nobody had any money to buy anything. It would have been so awesome to be able to buy things like solar panels or hydroponics garden kits but usually we’d spend our money on a chair or whatever.