The best we can do as society is to offer equal opportunity at success. Success is multifold: physical, mental and economic health jump to mind.
Beyond opportunity equalized, an equitable society should bestow success proportional to the ambitious, persistent hard-working individuals. That might be imperfect, as a few statistical outliers who tend to have outsized innate advantages (Einstein, Ramanujam & Usain Bolt for instance) are likely to be more successful, but that's the most equitable design possible, within the bounds of reality, including evolution - where the fitter tend to survive better
Beyond opportunity equalized, an equitable society should bestow success proportional to the ambitious, persistent hard-working individuals. That might be imperfect, as a few statistical outliers who tend to have outsized innate advantages (Einstein, Ramanujam & Usain Bolt for instance) are likely to be more successful, but that's the most equitable design possible, within the bounds of reality, including evolution - where the fitter tend to survive better