Why are GameCube games so small?

Why are GameCube games so small? The GameCube Game Disc is a 1.46 GB, 8 cm miniDVD-based technology which reads at a constant angular velocity (CAV). It was chosen by Nintendo to prevent copyright infringement of its games, to reduce manufacturing costs compared to Nintendo 64 Game Paks, and to avoid licensing fees to the DVD Forum.

The GameCube Game Disc is a 1.46 GB, 8 cm miniDVD-based technology which reads at a constant angular velocity (CAV). It was chosen by Nintendo to prevent copyright infringement of its games, to reduce manufacturing costs compared to Nintendo 64 Game Paks, and to avoid licensing fees to the DVD Forum.