It seems like an approach that begs to be gamed, though. Country A bans something, Country B reciprocally bans the something. Years later, Country B realizes it's at a severe disadvantage because County A has hoarded all the something and now there's a something shortage in Country B that was planned and executed by a Country A.

Obviously not probably an issue with social networks, but mindlessly banning something just because somebody else banned something seems like a recipe to be tricked.