If I may quote from my WFMU colleague Mike Rogers, who lives in Tokyo and has met Ms Ono:
"Her grandfather founded the Yasuda group. His family owned the company. Yasuda would have made them in the top 4 of the richest families in Japan... The Beatles sold lots of records, but Yasuda group made billions of dollars annually.
Yoko Ono was smart with money. She helped the Beatles break free from a contract that was cheating them."
Fascinating info, for those who still think that it was Yoko who was the gold-digger...