When you need something the same day and can't wait for Amazon delivery or something else, RadioShack has all kinds of audio cables and power adapters that you can't get from any other storefront.

But I'd guess that little stuff like that is a small part of their business so it isn't enough to keep them open.

I'd think a better partner for them than Sprint would be Best Buy - I know Best Buy was trying to transition into smaller retail stores (Best Buy Mobile) than the big boxes because of how much they have to spend on the real estate. Seems like a partnership there could help both companies - but if RadioShack has a ton of debt and Best Buy doesn't have the capital to take it then it wouldn't make sense.