The problem is that one can't just download the skills, they're learned. Sure, one can read a book, go to class, but good leaders grow into it, they don't click their fingers and become it.
Your last line is sensible.
Everyone likes to think about the additional income or standing leadership comes with and often get it wrong because that's their focus. In reality, it's lonely, extremely confronting, selfless and usually all-encompassing. Jumping into it too early/to soon is a big part of why people are monumentally bad at it.