Microsoft has purchased ZeniMax Media for US$7.5 billion, bringing popular game development studios like Bethesda and id Software under the Xbox umbrella. This may mark the beginning of Xbox exclusivity for series like The Elder Scrolls, DOOM, Fallout, and more.
https://www.notebookcheck.net/Microsoft-purchases-Bethesda-parent-company-ZeniMax-Media-future-Elder-Scrolls-Fallout-games-may-be-Xbox-exclusives.527084.0.html