A lot of people think that Fallout 76 did recover with the last expansion pack (and cross-play and Game Pass). Microsoft acquiring Bethesda even further insures at the very least it will stay a Game Pass mainstay for some time now.

(Also, it is interesting to note that with the Bethesda purchase, Microsoft will now own "all" of Fallout and the "Fallout diaspora" caused by Interplay's death, as Microsoft already owned development studios Oblivion [made FO:Vegas, had developers involved with FO1 and FO2] and inXile [had developers on FO1, FO2, and FO-predecessor Wasteland 1/2/3, and was in a blood feud of sorts with Oblivion].)