5) Late. Vichai Srivaddhanaprabha (Net worth: $5.2 billion)
Self-made billionaire Vichai Srivaddhanaprabha’s King Power has a monopoly on retail operations at Bangkok’s Don Muang and Suvarnabhumi airports.
This duty free king is currently working on expanding his business outside Thailand. Vichai owns 4% stake in Thai budget airline Nok Air.
He is also the owner and chairman of English football club Leicester City.