Dubai / UAE is about the largest per capita inflow of high net worth individuals, and even on an absolute basis has one of the highest immigration inflow of high net worth individuals.

Yes if you are poor as dirt and can just take your life savings of <$10k (probably 99% of humanity) on an airplane if you need to use it in another country, you can do so no problem and you do not care, the idea of a crypto OTC desk likely does not even occur to you. It is still solving the same problem, but by being small enough that no one cares.

The data pretty well speaks for itself. Humanity with money cares a lot about escaping capital controls. This is inviolable, the more the banking system handicaps itself the more capital flows into less regulated products.