It’s P2P technology and doesn’t use servers. So no datacentre is needed to run a Vault. It also doesn’t depend on a country. When all your TCP connections are encrypted and xorred with same plain data like a picture or some HTML it looks to the deep packet inspection that there’s nothing encrypted. So they have no clue you are connected to a fully encrypted P2P network.
Again it doesn’t 
. They have no clue you are using SAFE in the first place as described above.
Just like BitTorrent? That one uses quite some data but people use it all the time. Same for Netflix, quite some streams going around the planet and still we all use our beloved internet and watch NF when we like.