Taiwan is a small place and Taiwanese Han people came from a relatively non-diverse group of immigrants (e.g. largely Hokkien). For these two to have got a good education and risen to the top like this as immigrants to the US, likelier than not they were from educated or rich families.
If you filter for Taiwanese families educated or rich during the years they were born, the scope would probably have been somewhat small and covered an even smaller range of bloodlines, possibly even all somewhat related to a handful of historical clans.
The degree of separation between people like them from a small geographical region tends to be fairly small in general.
What's the story behind the semiconductor industry being centered at Taiwan of all places?
Adidas and Puma.
https://www.techtimes.com/articles/253736/20201030/fact-chec...
>One common misconception surrounding Mitochondrial Eve is that since all women alive today descended in a direct unbroken female line from her, she must have been the only woman alive at the time.[45] However, nuclear DNA studies indicate that the effective population size of the ancient human never dropped below tens of thousands.[49] Other women living during Eve's time may have descendants alive today but not in a direct female line.[50]