Nobody in OSMF asked to be part of LF. And we shouldn't. Foundations usually don't talk among themselves (I guess?)
So there is another group. For packaging data for consumers and promoting open geodata to businesses. On a scale never seen before. They needed a foundation, and LF stepped in.
Why wouldn't they? It open data. Participating companies have a good track record in supporting open source. Bringing open data to more people — what's not to like? OM competes with Google, not OSM.
What LF didn't consider is that OSMF as it stands now doesn't support mappers. OSMF supports servers, consumers, and @sotm. That what you'd get from their meeting topics:
https://osmfoundation.org/wiki/Monthly_Board_Meetings
Historically supporting mappers fell to businesses. HOT, Cloudmade, Mapbox. But now we're at a point when all of them fell off. Nobody supports mappers except other mappers.
In this resource-starved situation, people think not of collaboration, but of competing. Overture takes our resources!
What LF didn't consider is that OSMF as it stands now doesn't support mappers. OSMF supports servers, consumers, and @sotm. That what you'd get from their meeting topics:
https://osmfoundation.org/wiki/Monthly_Board_Meetings
Historically supporting mappers fell to businesses. HOT, Cloudmade, Mapbox. But now we're at a point when all of them fell off. Nobody supports mappers except other mappers.