5. GameStop (GME)
Today, GameStop has one of the most profitable retail models around. The growing retailer's stores stock the latest gaming systems, video games, and accessories. Margins aren't that hot on hardware, but they're pretty sweet on software.
However, the juiciest part of GameStop's model is where gamers trade in their tired games and systems for store credit. GameStop goes on to resell those items at huge markups.
GameStop stores don't need a lot of selling space given the compact nature of their merchandise, so they fit conveniently in the middle of strip malls where rent is cheap. Sales have held up reasonably well, even though video game industry sales have been largely languishing since 2009.
GameStop definitely doesn't seem very endangered now, but now that even Best Buy and Amazon.com (AMZN) are accepting trade-ins, the most lucrative part of the GameStop model is under attack.
Let's also flash forward a few years. As console makers shift to digital delivery of software, where does GameStop fit in? The retailer has made some intriguing acquisitions in digital delivery, but the days of GameStop's physical stores are numbered.