I have more than 60 GoG games. Most bought during their awesome collection sales. I have nothing but praise for GoG and all my dealings with them. They are the answer to piracy in that they make acquiring and owning games easier, and better than pirating them. I've bought a few games from them I had illegal copies of. Why? No DRM, extra stuff, the "right" price and this...
"The games are always remastered for modern operating systems as well, making them playable on new machines."
I haven't even played some of those 60 games. Bought as part of "deals" and in some sense I'm happy to give money to GoG for being fair / awesome and my trust / desire for them to continue doing so and thriving as a company and business model.
Being decent with customers, works.