It’s a company containing such remarkable talent that I’m sure they would not have run into significant issues raising capital on international markets.
It’s not like VCs are only allowed to invest in companies in their own country.
Usually to maximize its funding the company would move its HQ to the US and if they are lucky have an IPO there and eventually become effectively American after a few years (e.g. Unity)
It’s not like VCs are only allowed to invest in companies in their own country.