I do think that since they have 3 major publishers now, it's just not financially feasible for everything to be exclusive but they could get away with that with Minecraft and COD, I'm not sure gamers will accept that Sea of Thieves going multiplatform doesn't mean that -this game- won't in the future. God this is going to be so hard to communicate, Lol.
I also think developers won't accept it either, they are going to ask: "If he's multiplatform then why can't I be too?" Zenimax was already asking that in regards to Activision-Blizzard, Lol.