Educational games. Hear me out. The way we teach us basically how we did it 500 years ago. This is stupid, boring and not scalable. We dont have enough teachers, attention span is short, education is costly. So we need something that scales, is fun and involves all types of media plus gamifies education. Think Skyrim or GTA meets MS Encarta
To me, the less explored area is games (or computer assistance) that explicitly teach how to know and master your own emotions and how to get on with other people.
Edit: also games to teach basic household finance, critical thinking, and practical probability. (Academic probability teaching totally slides by unacademic people.)
Life skills, in short.