llamas: Just to add some more depression to this topic:
So the game has been out since March and was on sale during the Steam Summer Sale, so I wondered what the sales data might be. Here's what Steam Spy has to say: Owners: 1,287 ± 888.
That's depressingly low, so if Gog is saying it's not worth their effort to sell it here because it's not selling on another platform, I can understand that.
For contrast here are some other adventure games released this year on Gog and their respective Steam Spy sales numbers
More:
Day of the Tentacle Remastered - Owners: 78,321 ± 6,933
Deponia Doomsday: Owners: 45,674 ± 5,295
Samorost 3 - Owners: 29,270 ± 4,239
1979 Revolution: Black Friday - Owners: 8,684 ± 2,309
Shardlight - Owners: 5,307 ± 1,805
Last Door: Season 2 - Owners: 4,825 ± 1,721
Kathy Rain - Owners: 4,664 ± 1,692
Downfall - Owners: 3,056 ± 1,369
The Interactive Adventures of Dog Mendonca and Pizzaboy - Owners: 2,573 ± 1,256
Pilot Brothers 3 - Owners: 2,252 ± 1,175
Less:
Dreambreak - Owners: 643 ± 628
Things don't look promising.
I have to say that I'm shocked. All these numbers are depressingly low.