Xbox first party titles expected to hit $80 USD this holiday; Game Pass pricing currently unchanged.
I think it was actually publishers like EA, Ubisoft, Blizzard, and Activision that started the price increase. For big titles they started raising them to $70 a year or two ago, then to 80. I think I remember Diablo 4 launching for $80, or so.
I only know this because I refuse to buy from these publishers.