based
image:
screenshot of a Tweet from Running With Scissors reading
“We’ve been told our games are too expensive in some countries but we’ve been using Steam’s recommended pricing for a while. We trust Valve enough to not change this. If our games are still too expensive for you, you can pirate them until you have enough to support us.”
Go on and explain the difference
Releasing the source code would allow anyone to copy AND modify or extend the game as they see fit. Including all the inner logic that is normally compiled away.
Piracy or a compiled release without DRM (like GOG) only allows you to play the game and maybe modify some parts of it through modding after a significant amount of effort.