I think you're right and for me the numbers skew about 70-30 for people who want an "edge" and people who want a "cure".

Although, (at the risk of being pedantic and playing parlor games) I would say that many of the people seeking to boost their ability to learn and go to such great lengths to do it are also experiencing psychological problems.

Only anecdotal, but it's never been my most successful friends trying to become even moe successful, but rather people who feel like failures or that they're stuck in a rut, or that they're just not cognitively capable of being in this industry at the highest levels on their own.