Scott Miller (I presume a different one than the musician profiled here already) is the founder of Apogee, a software company that distributed the early efforts of id Software such as the Commander Keen series. Apogee mostly distributes other creators' works, though Miller did write some programs of his own early on, some of which were published by Softdisk, the company where the id founders were working before they quit to start id. Miller was instrumental in convincing them to do this, and the rest is history.