Each game though is super narrow, and is built on OS primitives already established. An OS must be all things to all users and all devs, so some complexity and

Each game though is super narrow, and is built on OS primitives already established. An OS must be all things to all users and all devs, so some complexity and bloat are inevitable. Users don't want to start from scratch to learn every program they need. Also, they often bounce off of games with controls outside their comfort zone.