Microsoft Spends $1 Billion a Year to Bring Third Party Tittles to Game Pass

[Landiri]

Even now, with the price and CoD Day 1, they're still going to make a loss. If you only play CoD for a month and then, as often happens, prefer to play something else, you can now play it for much less. Before, I had to pay at least 80 euros + Game Pass Core / Xbox Live Gold to play CoD on my XSX, now I pay 15 euros for a month or 45 euros for 3 months to play CoD AND Indiana Jones

It also reduces the chance for buying MTX.

People can go: "I payed $20 to play it a month, and now take my leave", instead of sunken cost fallacy.

I would never buy MTX/DLC for a game i don't own.