SecuROM back in the day caused plenty of legitimately purchased copies to not work. You'd have a physical disc with the game on it from the store, and SecuROM decided it won't work on your computer for unknown, undebugable reasons. .

Piracy may be a problem, but that's a problem to customer who were willing to give a company money. We stopped buying anything with SecuROM on it after 1-2 of those situations.