Sigh, this old hoary chestnut again. I don't suppose you'd have the thinnest shred of evidence of those "millions"?
The real priviliged class uses regular banking, private banking services[0], they don't need bitcoin.
It's the Engineer in Nigeria trying to conserve his 5 figures at most wealth for his family who needs Bitcoin.
The 7 or 8 figures guy just calls his nearest bank and they will give him the whole package and even launder the money for him.