Valve launched the Publisher Homepages "open beta" on the 18th of June, 2018. Shortly afterward, on the 29th of June, they launched Franchise homepages.
Those home pages started out with this little button on them, denoting that it's an open beta:
Fast forward to the 3rd of December, 2022, and they instead show this:
Huh, CSS changes aside, this feature is still in the same Beta! period? Hmmmmm. That seems fishy. Well, let's dig into it a bit, shall we?
The first time the Wayback Machine captured the relevant Steamworks documentation, it said this:
Open Beta
Feature Currently in Open Beta
This feature is currently in an open beta, which means we're still working on it, but it's open to all developers and publishers and visible to players.
Known issues and work in progress:
These are the bigger issues that we are currently aware of. If you encounter others, please give us feedback or ask questions in the beta group here: https://steamcommunity.com/groups/SteamCreatorHomepageBeta
- Do not drop a community group that you assigned a custom page URL as it will continue to belong to the dropped community group.
- Newly added games do not automatically add to your creator home page. You need to redo 'Associate your games' in the 'Setting Up' section below for each new game you add. We are looking to make this automatic in the future.
- What else? Let us know.
As of the 3rd of December, 2022, the Steamworks partner documentation says this:
Open Beta
Feature Currently in Open Beta
This feature is currently in an open beta, which means we're still working on it, but it's open to all developers and publishers and visible to players.
Known issues and work in progress:
These are the bigger issues that we are currently aware of. If you encounter others, please give us feedback or ask questions in the beta group here: https://steamcommunity.com/groups/SteamCreatorHomepageBeta
- Do not drop a community group that you assigned a custom page URL as it will continue to belong to the dropped community group.
- Newly added games do not automatically add to your creator home page. You need to redo 'Associate your games' in the 'Setting Up' section below for each new game you add. We are looking to make this automatic in the future.
- What else? Let us know.
As you can see, aside from some minor stylesheet changes, in the five years nothing about the feature's status has changed.
My hypothesis:
The people who worked on this worked on it until the 29th of July, 2018, at which point they moved to some other part of Valve and nobody ever looked at this again.