Microsoft is now a publisher on Sony's store

Open the PlayStation Store today and the entry for Halo: Campaign Evolved names its publisher as Xbox Game Studios, Microsoft Corporation. The game went live globally at 8am Pacific on 28 July on PlayStation 5, alongside Xbox Series X|S, Xbox on PC, Steam and cloud. It is the first mainline Halo to ship on a PlayStation console since the series began in 2001.

What shipped is a ground-up remake of the Halo: Combat Evolved campaign by Halo Studios, the team that was 343 Industries until October 2024 and has since rebuilt on Unreal Engine 5 after moving off its own Slipspace engine. Four-player online co-op, repositioned collectibles, new story content.

The reflex is to read this as Halo finally reaching a larger audience, which is true and also the least interesting part of it. The terms Microsoft accepted in order to get there are where the actual decision sits.

The price is the argument

Sony's own listing puts the Standard Edition at 49.99 dollars and the Premium Edition at 69.99. At current rates the standard price converts to roughly 43 euros or 37 pounds. The flagship tier in this industry has been sitting at 69.99 and above, and Microsoft brought its most valuable single property in twenty dollars underneath it.

Then it gave the same game away. Halo: Campaign Evolved is included with Game Pass from day one, and Xbox Play Anywhere means one subscription covers console and PC together. Premium buyers received up to five days of early access from 23 July, which turns out to be the only thing the premium actually bought.

So 49.99 is not really the price of the game. It is the price of a copy sold to someone who will not subscribe, and every other part of the structure treats the subscription as the outcome worth optimising for.

Cross-progression is what dissolves the lock

The detail that will outlive this launch appears on both storefronts: full cross-play and cross-progression across Xbox Series X|S, Windows PC, Steam and PlayStation 5.

Exclusivity was never really about which box ran the game. It was about the save file, the friends list and the purchase history all sitting on one machine, so that leaving cost you your own history. Cross-progression moves the progress to the account. A player can start a campaign on PlayStation 5, finish it on a PC, and forfeit nothing on the way.

Once the account holds the progress, the console underneath it is a screen. That has been the direction of Microsoft's stated strategy for a while; this is the first time the company has committed its most defensible asset to it rather than describing the idea.

That is the part worth carrying out of a US console launch. The moat platform holders sold to publishers, and that publishers priced into exclusivity deals, is being drained by the holder with the most to lose from draining it.

What to do if your product ships through a platform

Price exclusivity as marketing with a short half-life rather than as an asset on the balance sheet. Whatever premium an exclusivity window earns, benchmark it against this: the strongest exclusive in the industry went multiplatform within weeks of Microsoft confirming roughly 3,200 job cuts across its gaming division and moving four studios to new owners.

Then check whether your own lock-in is a moat or a habit. If your customers' data and history could move to a competitor without material loss, you are already in the position Microsoft is in and have simply not tested it yet. The test costs nothing: ask what a customer would actually forfeit by leaving this quarter, and accept the answer.

Watch the numbers rather than the launch. Microsoft reports its fourth quarter on 29 July, the day after this shipped, and the gaming segment is where a strategy this expensive either shows up or does not.