The reason it especially applies to (very) wealthy people is 1) they stand to lose the most money from their portfolio not having these superhero abilities and are most likely to come under scrutiny for the amounts they'd like to hide or teleport, and 2) they have the leeway to allocate parts of their portfolio to a greater variety of stores of value.

Certainly Joe the Plumber getting arrested and having his $100k in savings frozen and inaccessible while he's in jail or trying to hire a lawyer or move people on the outside, he will be very glad he had some in BTC. But HNWIs have a higher standard for comfort and security, so preparing for all eventualities tends to be higher on their list of priorities, and some of those eventualities can only be prepared for with Bitcoin.

I'm offering no judgment on the behavior of fat cats or criminals, just pointing out that once these people understand Bitcoin they'll realize they have to have some - and that does good things for all BTC holders.