I figured this was the reason. The collection was coming up on 9 years old and was a single purchase. It's not getting anymore major sales that can justify continued development.
It should be noted that NO ONE at 343 was happy with this decision, including Pierre Hintze.
One reason Microsoft ended Halo MCC development last July is because it lacks a revenue stream. 343 Industries wasn’t happy with Microsoft’s decision.
— Rebs Gaming (@Mr_Rebs_) March 7, 2024
Btw 343 tried to create revenue for MCC with purchasable Spartan Points but scrapped the idea due to backlash from Halo fans. https://t.co/TNg1KD88W5
You called down the thunder, now reap the whirlwind