[nubinetwork]

I could understand if it was just a key check, the drive could spin down after starting the game... except it doesn't. The laser stepper is pretty quiet compared to the motor, so I can't tell if it's actively seeking data.

[extraduder_ire]

Concern about people pulling the disc out after starting the game, maybe. Pulling out discs without the console realizing has a long history on playstations.