Obsidian says Larian's experience let it knock Baldur's Gate 3 multiplayer out of the park, but it wouldn't have been possible for Avowed
Once upon a time, Obsidian's upcoming Skyrim-esque (but definitely not Skyrim) RPG Avowed was set to have multiplayer. You'd have been able to jaunt about Eora with a pal or two before the studio realised that, hang on a sec, that's not a very Obsidian thing to do.