This is a huge mistake GOG, I believe that you got a lot of new customers during the sale, people who expect to buy here new games. You should give them what they want, or they'll go elsewhere.

Considering that the client is optional, I think that most people agree that the game should've been released. Optionally the client-based MP part could've been disabled.

I seriously cannot believe the lack of business skill on display here. Divinity is one of the biggest RPG releases of the year with thousands of fans eager to spend their money on it. And yet, GOG is happy shoving all that business towards Steam. Are monkeys at work in your head offices? Is all the talent over in the Witcher studio, with interns left to handle the strategic business decisions?