It was a reason to doubt the Marco-Enemy-Web rumour, as there was no sensible country where you'd find all three. Take out Polo and that problem goes away.
There were seven countries which screened all three.
You can rule out Australia and New Zealand (and Hong Kong and Singapore for Enemy and Web) from that list, due to most records indicating their copies were either destroyed or cycled on, and they were ultimately found in Nigeria.
That leaves Zambia and Gibraltar.