Coinstar's (NASDAQ:OUTR) Redbox kiosks are running away with the DVD rental business.

The automated retailer improved its market share by 7 percentage points, to reach nearly 50% of the market last quarter. And with DISH Network's (NASDAQ:DISH) Blockbuster still closing stores, and Netflix (NASDAQ:NFLX) continuing to push its customers into streaming, further gains appear to be in the cards for Coinstar.

In the video below, Fool contributor Demitrios Kalogeropoulos discusses Coinstar's growing dominance and argues that the company's biggest opportunity is in convincing its growing customer base to use the service more frequently.

Fool contributor Demitrios Kalogeropoulos owns shares of Netflix. Erin Miller has no position in any stocks mentioned. The Motley Fool recommends and owns shares of Netflix. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.