There's no meaningful/competent oversight. It's all just about feels and optics. And thus no real progress has or will be made.
Anyway, yes, I agree that competent and genuine people (who are extremely rare) ought to try to make a meaningful impact in the world. But there's generally more money in something else.
(one rare exception that comes to mind, though i haven't visited them, is The Ocean Cleanup project. They seem to be experimenting and succeeding towards the worthwhile goal of making effective engineering interventions for cleaning up waterways and oceans)