Emphasis on the "might" - oh and only for the multiplayer portion only.
We've seen dying franchises getting a pulse after introducing certain aspects of their original mechanics from a pay-to-play to a free-to-play model - Counter Strike: Global Offensive and Call of Duty: Warzone are the most successful ones that come to mind. Now, we might see the same done for Halo Infinite.
Smyths (a British video game retailer) may have accidentally leaked the direction of Halo Infinite in a description for Halo Infinite. "Groundbreaking free-to-play multiplayer experience" was one of the selling points of the game (in which was since then pulled from the website, but can still be accessed via Google Cache). This would be an unprecedented move for the Halo franchise, but may go in line with strategies that other titles have successfully attempted to revive a declining player base.
We'll see if this rumour turns out to be true. I can't wait to drop down with Chief again!