Dont know why this website mentions Steam then.
Xbox chief Phil Spencer shares his wish to bring PC game stores to console, giving players the freedom to choose where they buy their games from.
gamerant.com
In an
interview with Polygon, Microsoft Gaming CEO Phil Spencer revealed his wish to bring down the closed ecosystem of consoles and introduce third-party storefronts, such as Steam, Epic Games Store, and Itch.io, to such platforms. When asked if these stores could exist on Xbox consoles in the future, he said “Yes,” likely fueling excitement among fans. Further, he highlighted that getting to choose where a player buys their game from is an advantage PC gaming offers over console gaming. He said, “Nobody would blink twice if I said, ‘Hey, when you’re using a PC, you get to decide the type of experience you have.' There’s real value in that.” However, he also admitted that such a move would require tackling a lot of paperwork.
Either way, it will probably happen if they are gonna do Epic.