Billionaires? Lol. The last thing anyone would worry about is how billionaires cope with these sanctions for obvious reasons. They are more than capable of handling themselves which is why worrying about them in this manner is silly.
Some of them have invested in BTC and other popular cryptocurrencies over the years and have made a killing through them.
But, who will think about it billionaires??? What about their superyacth that has smaller yacth and helipad on top of it!! Won't someone please think of them???
(( All jokes aside nobody really cares about them.
There are like maybe 100 people, or even like lets say 5000 people in the world (not the forbes list, the real ones with hidden wealthy AND some of the forbes ones) that could literally pool their money together and turn this world into paradise. I am not even joking, people like Putin, mao, Saudi king etc etc, ALL the hidden wealthy people in the world, plus some of the forbes people could get together and make the world great. So excuse me if I do not care what happens to them.