>Take World of Goo. Very popular game. Released in 2008; got a sequel in 2024. Why so long for a sequel? In part, because when they experimented with a DRM-free release, they had a piracy rate of over 90%. Can you prove that's lost sales? No. Would any reasonable person say that is lost sales? Absolutely.

And seems like they learned nothing from this terrible experience, because they've also released World of Goo 2 DRM-free: https://worldofgoo2.com/