Can someone explain to me how this is? It's a company HQ'd in New York, but it's not allowed to do business in the very country it's HQ'd in? What am I missing?
Well, maybe for startups in general, but it apparently didn't work out for Polymarket. Also, it's probably a better case if you're just not targeting US customers, rather than being actually forbidden from trading with US customers.
Fireworks are illegal in NY and have been illegal in PA for much of the past two decades. Despite this, the border is crawling with fireworks stores. PA made it illegal to sell fireworks to PA residents, but totally legal to sell to residents of neighboring states provided they immediately transport them over state lines.