What you are describing is more like a pre-seed/seed fund of which there are thousands around including YC. Sure they don't have the capital but that is often not the blocker for most of these companies.
Vision fund is focused on taking successful companies global. And using their capital to knock out competitors and their experience in managing execution risk.
And their "vision" seems to be focused on a world where everything is provided by autonomous and robotic systems. And where Uber, Wag etc are the brands that leverage them.