I guess we'll soon get more info on what this means for Bethesda games on Playstation and Switch.
My money is on MS platform exclusive for all new game releases moving forward. Games like ESO will continue to get support because they already exist and previous contracts like Deathloop will be honored, but all future Beth games including the next DOOM, Wolfenstein, Starfield, Elder Scrolls, and Fallout will be exclusive to XBox and PC.
In the long term, this will be the most beneficial. It gives console players incentive to buy a Series X/S, which will also draw them to gamepass.
They will still get their cut from PC players, and even further expand gamepass their as well. MS main goal is gamepass right now, and releasing games on a competitive platform (that is being very aggressive with 3rd party deals themselves), will work against them on that end. The only way I see them going to Playstation, is if Sony allows gamepass on their console...which will never happen.