Don't worry. According to Mike Hearn Bitcoin can survive just fine with 4 or 6 (forgot which) copies of the blockchain worldwide.
Is he right or wrong about that?
Via what methodology would we test that hypothesis before arriving at a conclusion about its validity?1. Does the network still provide strong double-spend protection?
2. Can users freely
* publish valid transactions to the Blockchain (censorship resistance)?
*That is, subject only to marginal transaction fees.