The way things are going in 100 years we're going to argue that it's still faster than intergalactic bank transfers.
You've just confused apples with oranges.
A
blockchain cannot compete in speed with a centralized
database (VISA). Whoever expects that has misunderstood... everything.
Bank transfer is different than
card payment. National bank transfers take 1-3 days. International takes
sometimes +1 day.
Intergalactic ones will be trickier unless faster than speed of light communication is developed

so I won't take them into discussion for now, since blockchain will suffer from the same impediment.
Back to reality: just read about people trying to transfer fiat from their bank account (for example to Kraken) and wait for days.