A Forbes contributor is giving some reasons why Best Buy will go out of business. I think it won't entirely go out of business but instead close low performing stores. Their Playbook prices aren't competitive and I don't know if they'll be going down any time soon.
Like Borders, they are offering deals that are probably killing their bottom line. I'm a BB rewards member (as I was for Borders). I got an offer to get a 3 pack of $10 iTunes cards at 10% off. Since I had a $5 reward I decided to go for it. When I made the purchase they were on sale for $25 and with the 10% off and my $5 reward the total was $17.95.
Although BB's cost for the $30 worth of iTunes cards is probably not full value, You can make money selling $30 worth of merchandise for $17.95.
Their clueless employees don't help no offense to anyone who works at best buy, but I swear I've never met a best buy employee who knows anything about tech (some can't even connect a tablet to a wifi network).