An anonymous reader writes: Green Mountain (Keurig) stock dropped by 10% this morning after a brutal earnings report. The reason? CNN Money reports that DRM has weakened sales of their Keurig 2.0. CEO Brian Kelley admits, "Quite honestly, we were wrong." Last year Green Mountain decided to make their new coffee machines work with licensed pods only. The company says they now plan to license more outside brands, and bring back “My K-Cup” reusable filters.