The problem with versioning & management systems for docs is that you need the process to drive the adoption. Getting people to version, approve, and fully manage a document database is the hard part. Many companies do not even adequately document - they just send information in a Slack/Teams message and nothing is written down for later (this is why startups like Glean exist: https://www.glean.com/). There are massive companies that exist without this organization layer and just whip up Notion/365/Office docs with the expectation the documentation will get lost and become irrelevant very soon (even if a search feature existed).
The point I'm (badly) trying to make it is that my intuition tells me very few companies will actually pick up and adopt software like this. If they do, there might be many nuances in their process and they might find the versioning easier to do with simple duplicate Notion/Office/GDocs parent templates.