Skype seems to have floundered not on lack of features, but on app stability and call quality. Honestly, it looks to me like an example of a technically-challen

Skype seems to have floundered not on lack of features, but on app stability and call quality. Honestly, it looks to me like an example of a technically-challenging product that failed by underperforming on core CS. I'm not sure why it would be framed as low-difficulty, except that consumer-facing tools tend to get written off as simple.