The SCT community holds a lot of stake, but is a tiny circle of users. What they seem to be counting on is that JS will take them to the moon - he is going to dump. They also seem to think that the rest of the community that is posting thousands of posts daily is going to keep doing so - no, they are going to dump also. And while the stake that JS has is very large, the invested community holds more. That means 340 million Steem is going to dump on the exchanges nearly simultaneously... how does that price look?

A sister chain can do as it pleases, start fresh or fork whoever they want. Perhaps on a sister chain, the Stake of those who supported the centralization of the chain and the subsequent destruction of the token value, will go to funding the new SPS.