Xbox boss Matt Booty has confirmed that Microsoft will review the platform exclusivity of future first-party games on a case-by-case basis and will only make binding platform announcements together with the specific release date.
The era of rigid console exclusivity at Microsoft has officially ended, even though there is still considerable confusion about Microsoft's future direction. Booty stated this on the sidelines of the Xbox Games Showcase. clearthat large multiplayer and live service titles are released across platforms anyway.
Already committed titles for the PlayStation 5, such as "Fable" and "Halo: Combat Evolved," will be delivered as promised. Standalone projects like "Gears of War: E-Day" and "Clockwork Revolution," however, will remain exclusive to the Xbox platforms for the time being. Microsoft is acting purely opportunistically. Management isn't making quick decisions, but rather prioritizing maximum profit margins.
Financial pressure is breaking down the console walls.
Behind this strategy lies a simple business strategy. The enormous development costs of modern AAA productions can hardly be recouped through the stagnant hardware base of the Xbox Series X/S. And certainly not if everything is played via Game Pass. Microsoft needs the reach of over 90 million PS5 consoles sold to secure the division's balance sheet. This isn't a strategic shift driven by altruism, but an economic necessity.
Sony used a similar model when porting its single-player blockbusters to PC. They adhered to a timeframe of one to two years to avoid jeopardizing console sales. This strategy has since been abandoned.
Microsoft is now going a step further and blurring the lines at will. Sometimes yes, sometimes no. This creates maximum confusion for the end customer. Anyone buying an Xbox today no longer knows which in-house games will still be exclusive in two years. The hardware is losing its most important selling point.
For buyers, this lack of commitment represents a clear shift in priorities. Xbox hardware is definitively becoming a mere Game Pass player for budget gamers. Those who want maximum flexibility and access to all games will opt for the PlayStation 5 or a PC this generation. While Microsoft is providing some direction, it leaves hardcore fans bewildered.

The games aren't even fully on the disc anyway, so they're uninteresting.
I think Halo or Forza have no place on PlayStation.
As a PlayStation fan, I have to agree with you. This belongs on the Xbox.