Founding an enterprise requires total commitment. Many foreign scholars can't bear to part with their achievements in the US, but really want to return to Taiwan to develop a business. So they leave their families in the states and become highflying commuters between the two places. As a result, they are often unable to take care of either.
「而開創事業需要全心全力投入，不少海外學人捨不得放棄美國的既有成就，又想回國創業，於是把家人放在美國，當空中飛人來回兩地，就像『沾醬油』一樣，結果常常無法兼顧。