The project has involvement from people who have spent decades dedicated to these ideas — it doesn’t seem like a vanity project or a play for control. The most cynical view is that it is beneficial to the OP because it provides access to potential investments, which, sure, isn’t a pure philanthropic venture, but that seems a pretty small price to pay. The people involved are the people you would surely want running this project.
The thing is that our endowment is focused on the "old" non-commercializable OSS projects, while VC is about "new" and commercializable stuff. The irony here is that these two things in my life lie on opposite sides of the spectrum—both in scope and risk tolerance.