I swear, no one who laments our lack of Einsteins and Mozarts has spent a single second ever actually trying to make a living as a scientist or musician.

You want more Einsteins and Mozarts? Establish universal basic income. You don't even need to pay a ton. Just enough that everyone can have basic subsistence regardless of what they can earn by working. The true Einsteins and Mozarts will probably be content with just that modest level of income, living in a studio apartment forever so they can dedicate all of their time to their passion.