I think SWIFT transactions are under US control.
No use of Apple, Google, Amazon, AirBnB, Uber, or other US-based services.
Eg, "Canadian judge Kimberly Prost is unable to use credit cards or access everyday services in what she calls an attack on the independence of the judiciary " - https://www.irishtimes.com/world/us/2025/12/12/its-surreal-u...
Such a sanction really narrows down where they can buy online — it's not just the US that becomes off-limits.
People knew and know quite well what US was and is, besides the leading academia (many, if not most, lured there by money from other countries) and the holywood circus.
And no, it is not "because of Trump".
This is a very big hammer and reveals how foreign entities are deeply dependent on the American financial system and thus exposed to the political whims of the US.
Not that the USA NEEDS to apply that designation to use those methods....