Yes, you heard/read right.
Here are two videos explaining it a little bit more:
Although it doesn’t sound too bad, mentioning Xbox + PC sounded like Xbox + Microsoft Store to me.
I’m not happy about that. There goes my hope for a DRM-free version of The Cave plus any future Double Fine game.
Microsoft probably has never heard of GOG before, I don’t know a single game from them on there (I was actually convinced Ori and the Blind Forest was published by them but checking this one at least the GOG version is by THQ Nordic, strange).