I think this analysis by Emin Gün Sirer applies to Barry Silbert:

"The incentive structures are lined up for people to coalesce onto the new chain, with the economic majority, fairly quickly. If all players were maximizing ether value, we'd see the minority chain wither and die quickly. However, there are a large number of people who see Ethereum as a threat to other cryptocurrencies (for entirely flawed reasons) and want it to fail. Further, some people specifically want Ethereum's hard fork to fail. These folks might well subsidize mining on the minority fork for some time. If this were to happen, sit tight and do not panic because the predictions, made for rational parties, do not hold in the presence of economically irrational players subsidized exogeneously. Use the majority chain and ignore the minority chain's hashpower until the subsidizing party gives up or runs out of cash. Some people, especially in Bitcoin-land, play up the importance of mining power, mostly because they are thoroughly confused, as seen here and also here. The moment when there are no exchanges on the minority chain, it becomes a harmless testnet. Remember that miners are worthless without economic power, which comes from exchanges.