Indeed, it won't. But producing more (quality) content is bound to attract like-minded people, who can then become an audience that may be willing to buy whatever you create later on. I think that's the message of Naval.
No. It does not mean this: "transforming your interests".
It does mean transforming your special knowledge into a product, and (with the help of zero marginal cost) replicating this knowledge (what naval call leverage).
Turn your skills into a product, automate yourself and sell your product
And as the Stratechery dude says, software has zero marginal cost, so just sell infinite number of copies of your software.