Sarah Taber has given some interesting talks about this - the short version is there is probably a fair amount of outbreaks caused by small farms, they just don't have the reach to be detected.
This. As an infectious disease epidemiologist, the number of people who will work their way into laboratory confirmed case reports is a small fraction of the total number of people impacted.
You are almost certainly not reflected in those numbers.
They are not the same. Per VC culture, small business owner is a looser, tunning lifestyle business. They produce useful products in competitive markets and nurture relationship with customers.
Startup is meant to become monopoly and does not have to have good economics before abusing monopoly power. Competition is for loosers. It is about disrupting, not about building.
In contrast, I loved biology and felt its applications call to me, and it took me like five years after struggling through calculus to go "Oh, that's what that's for."