I completely disagree with this. It's obvious that the top contributors to those realms are incredibly talented - Einstein, Newton, Euler, whatever. At the same time, they all put in an absurd amount of work, and their most well known contributions typically come from periods of almost exclusive focus on their chosen problem - Newton stuck inside working on gravitation because of a plague outbreak, Einstein's obsessive work in the years leading up to his Annus Mirabilis papers.

Innate talent may be a prerequisite for creative work, but it's seldom sufficient without putting the time and effort in.