Nothing to stop them, they just probably have no reason to do so. They would probably consider it charity work and they're not in that business for sure.
Come to think of it, I have no idea what business Amiga Inc. is in. It seems like it's just a shell IP company that may lurk for a while before it becomes a full fledged patent troll.
I would guess the patents inherent in the Amiga assets provide a basis for some compelling lawsuits.
Though that may not be the case since I guess Gateway (now owned by Acer) still owns the patents but has licensed them to Amiga Inc?
It's all very complicated and messy.
AROS FTW.