I'd imagine at a technical level, forcing all Russian citizen data to reside on Russian servers would mean running a federated/sharded system. It seems like a n

I'd imagine at a technical level, forcing all Russian citizen data to reside on Russian servers would mean running a federated/sharded system. It seems like a non trivial challenge. A lot of their code would need to have the concept of locality. Running an algorithm to suggest friends or rank users? Now it needs to be changed to deal with not having Russian users' data accessible in the same way. There's probably elegant solutions but why bother if you can avoid it? Perhaps they thought they could win a legal fight. Or they wouldn't suffer enforcement actions, or public outcry will save them.