He may have noticed this in himself first, then applied it to others. In fact, he may consider it a limitation of genius and part of the current human condition.
One thing about good ideas - is not so much the novelty, but more-so ideas that are far enough out there that they are semi-novel, but based on an extrapolation of the current state of things such that a path to getting the idea implementable is possible.
Sometimes, this means that you're able to foresee the trajectory of industries and technology that others miss or can't.
However - its also important to have the resources avaialble to be able to implement/execute/foster that which is needed to make those ideas become reality.
In this case, he has immense resources which can make the ratio between rubbish and great ideas shift significantly.
Its easy to simply be a daydreamer - even if a greatly informed day dreamer - when you have no resources.
I am going to insert this piece into my pitch. It touches on the basic and salient rationale that access to resources is a given to derive inertia for for certain ideas
