One of the most notable "exclusive" stories in this domain is the Digital Sound Factory's exclusive licensing of the legendary E-MU Proteus sound library Key Insights from the SoundFont World Exclusive Legacy Content Digital Sound Factory
Traditionally, digital goods are infinite. You copy a WAV file, and it multiplies. The “Library Exclusive” exploits a loophole in this logic: . The creator says, “This specific soundfont will only be available to members of this library for 30 days,” or “Only 500 licenses for this .sf2 file will ever be sold.” soundfont+library+exclusive