Something people haven't mentioned yet:
- a good portion of RPGs aren't just books, they have a lot of loose material
If you have a boxed set, perhaps with dice and separate pages with fold-out maps, that kind of item generally would need more special care than just a regular book. Those things often have to go into a "special collections" department, which general libraries often don't have enough funding, space, or methods in place to keep track of what's supposed to remain in the box.
Plus, people sometimes steal free-floating things like dice, fold-out maps, and the like. Or they play the game, and accidentally leave it at home or in their backpack.
- a good portion of RPGs aren't just books, they have a lot of loose material
If you have a boxed set, perhaps with dice and separate pages with fold-out maps, that kind of item generally would need more special care than just a regular book. Those things often have to go into a "special collections" department, which general libraries often don't have enough funding, space, or methods in place to keep track of what's supposed to remain in the box.
Plus, people sometimes steal free-floating things like dice, fold-out maps, and the like. Or they play the game, and accidentally leave it at home or in their backpack.