I think you are at least partially reinforcing my point here. Two of your three examples had a delayed release on GOG, and that's pretty telling especially considering one of those two was developed and published by GOG's former parent company.

Two of the three examples are solidly in the realm of indie titles.

Yes, there are big release games on the platform. I see, for example, that Silent Hill f is on GOG.

I will generally agree that piracy eventually happens, but a lot of DRM has made piracy impractical for critical early weeks of a game's release.

I think different video game publishers have different opinions on the matter and both sides have a lot of validity. I also think that different types of games have different rates of piracy, as it can be a crime of convenience or not.

If your game's demographics skews more educated, affluent, and/or older, I would imagine that piracy rates will be lower. Perhaps your game is more popular in some countries over others that have different laws and/or cultural norms surrounding piracy.