The discoverability problem is that the medium still hasn't figured out a reliable, easily reproducible way to capture and hold a listener's attention. It's easier to stumble upon video curated and served via algorithm than it is to click several buttons in a dedicated app in order to listen to a piece of audio.
Choosing the right training content isn't about how much training content you offer. It's about how well that content fits the job it needs to do. The real training challenge is not content. It's fit We often hear that teams need more training. But when we dig deeper, the problem is rarely a lack of courses. It's a lack of focus. Training often fails because different needs get lumped together into one giant learning initiative. For instance, it's impossible to use the same approach for teaching introduction to Python as for harassment prevention.