As a point of interest, the American equivalent of this is called an "Authority." Examples include the Chicago Transit Authority, and the Port Authority of New York and New Jersey.
Where does OSM provide value here and how can it beat GMaps in mindshare and keep suriving?
Google maps pulled data from OSM so the government had ~zero incentives to publish to GMaps and every other mapping service directly. It’s simply more work without benefit.
PS: If I remember correct Google was on a 2 week delay for OSM data at the time, but that wasn’t considered meaningful. Also, what’s with all the hate here?
OSM data is on open license, so you can take it and adapt for your own use.
In case of errors you can fix it instead of begging Google t do this.
In some places and for some types of data it is much better than Google Maps.
Google is sole entity controlling Google Maps and may suddenly do 1400% price hike (they did one already).
If you want to do anything with data - with OSM you can, with Google not.
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BTW, it is not necessary to beat GMaps in mindshare to flourish and grow.