GoG actually implements something the rich tool* behind steam once said: “piracy is a customer service issue.”

Broadly speaking, folk only private games for three reasons: either the DRM limits how they can play their game, they don’t want to make such a purchase sight unseen, or they haven’t the funds to purchase the games they want.

There’s very little that will turn the third type into paying customers, but the first and second can be converted by some combination of.the straight removal of DRM and a generous return policy.

It’s also worth noting that pirates of all three groups will on occasion make a game purchase, due to a desire to support an especially liked game or studio or behavior.