Different person, but isn't this already a problem with closed source games? My game dev experience is more hobbyist than professional, but I've spent a few lonely hours on ghidra. I also teach secure coding at my university, but I focus more on how to patch legacy systems and audit code for vulnerabilities. My point is that closed source vs open source, I see this as an issue in both systems and therefore irrelevant. Pardon my ignorance on this exact topic.