It's worth noting that the important part here is the "have no involvement with" part, which the geographical blocking helps establish.
A US entity operating under US law with no physical presence in a foreign jurisdiction but actively courting business with citizens in that foreign jurisdiction has to be a lot more careful. For example, if one of their foreign customers sues them in a foreign court, wins, and gets a damages award there is a decent chance in many states that the US court would recognize and enforce that judgement.
A US entity operating under US law with no physical presence in a foreign jurisdiction but actively courting business with citizens in that foreign jurisdiction has to be a lot more careful. For example, if one of their foreign customers sues them in a foreign court, wins, and gets a damages award there is a decent chance in many states that the US court would recognize and enforce that judgement.