Business creation is wealth creation. It is job creation. It is everything to the american economy.

"I mean, one co-founder had one parent born overseas and the company is counted as immigrant founded"

No it is not counted as immigrant-founded. The point of this statistic is to show that immigration has a positive effect on business creation. In other words, had the parent never immigrated, the child would not have founded a business (created wealth) in the USA.

I think the same is true in reverse: americans who emigrate are probably creating more businesses in countries they emigrate to, than citizens of these countries. Immigrants are risk-takers who want to take control of their working lives.