They posted on HN about why, some years ago: https://news.ycombinator.com/item?id=16227130
tl;dr it was hard to monetize, experimental research not really well fitting the startup model, but at the core of it I think it lacked a compelling, concrete problem to solve. Eve was an amazing tool with a lot of potential, and an unclear story of how a person might actually want to use this tool in their life.