The website of an American company returned a blank page to me. I thought that they must have made a mistake and that it would be fixed soon. Several days later it was still returning a blank page, so I sent them an email in case they didn't know. It turns out that they don't want to deal with the laws of other countries (EU's GDPR, etc.) and so simply return a blank page for anyone visiting from outside America. A "451 Unavailable For Legal Reasons" or some other type of explanation would have been less confusing than the blank page.
Had no idea, interesting!