A self-steering generic product vision: "Make it so more of your users can do what previously only your savvy users could do"

Of course, you need to have a solid core (e.g. a viable business model that generates net monetizable value).

If you also have some kind of self-hoisting product quality (e.g. a network effect) then you have not only viability but also compounding returns and you might not need to distill much more of a vision.