For this to truly become a console replacement, Steam needs to mint agreements with Netflix, Spotify and Discord.

Netflix and Spotify could live as a 'game' application in the store. Spotify also is fairly easy to plug into Steam's overlay music control (currently via Decky plugins).

Discord just needs integration with the Steam Friend List. I know Valve wants Steam Friends to compete with Discord, but that ship has sailed every since 2020 (and frankly, the entire decade before that when they let it languish).