In terms of persuasion, abundance works because it creates the impression of not needing any particular person (or event). This communicates high value and non-neediness. The opposite, neediness, creates an immediate negative reaction and communicates low value.
One of the best ways to communicate abundance is to use costly signaling. This is the act of doing something that purposely hampers or hurts you just to show that you can take it.
Abundance is a natural consequence of a proper diagnostic and specialization. When you know exactly who you want to work with and what generates more results, you have zero need to convince anyone else.