Isn't the reason buying international shares is slow that they don't want you to do it and therefore have regulated it?
There's no technical merit in crypto that actually makes things fast, it's just a regulation dodge. It's necessarily slower and more expensive than TransferWise.
They have decided it's better to avoid their local businesses being beholden to foreign investors, which is a case that can be argued.
If you're being directed mostly by overseas investors who will never see your actual operation in person, that increases the pressure to cook the books, either on a direct accounting-level basis, or by cutting corners in operations, environmental or labour standards, or product quality.
Notice how some countries insist on joint ventures with a 51% local partner, which similarly ensures there's some local skin in the game.
There's no technical merit in crypto that actually makes things fast, it's just a regulation dodge. It's necessarily slower and more expensive than TransferWise.