The Long Game
There's a version of sync licensing advice that gets passed around a lot. It's well-intentioned, generally accurate, and built almost entirely around studying the placements of artists who will never be in your situation. Sia. M83. The Black Keys. The Cinematic Orchestra. These are instructive examples if you're trying to understand why a piece of music works in a scene. They're not particularly useful if you're trying to build a production music catalog as a long-term business.
The Version From Inside the Iceberg
The NYT Magazine just ran a major piece on production music and sync licensing. Here's the perspective they couldn't get from the outside—from someone who sold a catalog to Extreme Music.