GameStop keeps their discs in little paper folders. Out of dust.
Where I work we used to keep all our discs and now only some of our discs in TrimPaks. They don't collect dust there either. In fact they're better off because they don't get shuffled around and popped off their spindles like they do in their cases where people throw them around all day.
Yes but when the employees take the disks out the package, they risk damaging them thus defeating the sole purpose of packaging to being with.