Why isn't implicit differentiation using infinitesimals taught earlier?

To play devil’s advocate, why should this be taught at all? In my various careers in retail, banking and insurance operations, including data analytics, I have never needed this level of math. I would daresay that 90+% of the population falls into the same category. Pre-college/university education can’t address everything, wouldn’t that time be better spent teaching things that the majority will use directly or indirectly in their life/career?