I agree with your projection for the future and that PMs in general develop only limited skills for building products or contributing at the ground floor, but I

I agree with your projection for the future and that PMs in general develop only limited skills for building products or contributing at the ground floor, but I would not get into programming unless you feel like you're wired for it, because you may invest years only to become mediocre, and can even grow to hate it. Why not contribute by launching a startup as CEO? If a Harvard MBA with deep pockets and PM experience reached out about her startup idea, that is a beer or coffee I would take seriously. In other words it sounds like you have the background to attract a talented programmer cofounder.