Some millionaire move there wealth not because of the countries they are in will steal it but because they stole the money and are looking for countries to hide it away in, large millions if not billions leaves African countries to other countries from corrupt leaders/politicians and are hidden off.
I hope bitcoin does not become like an -option/alternative- for these likes.
I think those who you are referring to are real people and part of those millionaires who moves from country to country, but I sincerely believe that mostly those are honest people who did a great job and not trying to hide anything from anyone.
Bitcoin will always remain as an alternative option for people who still as a place to hide money in, but thats inevitable, its just how decentralized money works and thats part of the game.