I thought that Masayoshi Son's Wikipedia intro was interesting:<p>> Masayoshi Son (Japanese: 孫 正義 Hepburn: Son Masayoshi, Korean: 손정의 Son Jeong-ui; born August 11, 1957) is a Korean-descendant (Zainichi Korean) Japanese businessman and the founder and current chief executive officer of SoftBank, the chief executive officer of SoftBank Mobile, and current chairman of Sprint Corporation. According to Forbes magazine, Son's estimated net worth is US $20.4 billion and he is the richest man in Japan,[2] despite having the distinction of losing the most money in history (approximately $70bn during the dot com crash of 2000).[3]