Something else to consider, Cromcrom, is that this Steam Summer Sale discount was always going to happen. But because the launch was delayed repeatedly, and by many months, it just happens to be occurring right when the launch is finally happening.
If Divinity : OS had hit its original release date towards the beginning of the year and then went on sale ~6 months later in late June, would this discussion even be taking place? If anything this sale price would be quite normal.
Sure, with the way things turned out the timing is odd and even unfortunate, but the launch delays were unfortunate as well, and the one date that wasn't going to change in all of this was Steam's Summer Sale. I suspect the developers also wish there had been several months between it and their launch, but this is just how the timing worked out.
