Another point is their device. If they're on a low-storage device, maybe they can use cloud storage solutions or external drives. Providing practical tips could help them manage without resorting to piracy.
Lastly, make sure to stay positive and offer assistance with purchasing options. Maybe include links or steps to find the game on legitimate platforms. That way, they have a clear path to get the game without violating any laws.
Next, there's the technical aspect. If they compress the game themselves using a tool like 7-Zip with maximum compression, does that actually work? I'm not sure if that's feasible without losing critical data. Maybe they're thinking of a torrent file that's highly compressed. But torrents are commonly associated with piracy, which brings me back to the legal problem.