None of the richest Koreans are self-made billionaires, according to Bloomberg's list of the world's 400 richest people.

All five Koreans on the list inherited their wealth, whereas 28 out of the 29 Chinese entrants and all five Japanese tycoons on the list are self-made.

Worldwide, some 65 percent or 259 are self-made billionaires and only 35 percent or 141 inherited their money.

The world's top 10 richest people are founders of start-ups that revolutionized their respective industries -- Microsoft founder Bill Gates, Amancio Ortega, who co-founded Inditex that owns retail brand Zara, Amazon.com CEO Jeff Bezos and Facebook co-founder Mark Zuckerberg.