If you want to do business in a country, then you have to follow the laws of that country. Polish courts would enter judgment against the company for violating Polish law, premising their jurisdiction on the activities of that company within their borders (e.g. accepting payment in polish currency, selling ads to polish businesses, charging for polish views/clicks). They can then seize the company's property in Poland to enforce that judgment. They can also introduce that judgment in foreign courts to do enforcement actions there. Those foreign courts would examine the validity of the Polish judgment (e.g. by reexamining jurisdiction) before issuing orders to enforce it.

There's nothing novel about this. This is how civil judgments are enforced across borders every day.