It's hard to get any source that would satisfy your question.
Let me put it this way. You are poor. Your family is poor. Everyone around you is poor. When you are financially in trouble, you ask someone to lend you money. In Asian culture, you don't start asking bank for money. You ask your friends, relatives and neighbors for help.
Now you are famous. Making $50,000 a day. Everyone is going to come after you and ask for help. You don't want to because who wants to be debt collector? But you have to because they are your relatives, friends and neighbors. You are in a dilemma and you don't know what to do about it.
Also, regardless of where you live, when you are rich you and your family becomes kidnappers' target. In countries like Vietnam making $50,000 a day makes you a millionaire to the people who are just making a few dollars a day...
He was happy with the initial revenue but he then realize his publicity would have cost him relationship with other people and that's what money can't undo for him. He just can't.
I've lived/worked/travelled in Asia for several years and still regularly visit family and friends.
Sadly Vietnam (and China, etc) don't really adhere to the rule of law except on paper, bribes and corruption are normal and it's really about the connections you have.
You really have to live there to appreciate that -- not just on a holiday for a week.
I've only heard this said on HN and I doubt that it is significantly dangerous to be rich.