1. It would be more prone to 51% attacks, unless they use a different mining algorithm than the more popular chain 2. The usefulness of contracts involving mon

1. It would be more prone to 51% attacks, unless they use a different mining algorithm than the more popular chain 2. The usefulness of contracts involving money is directly proportional to the stability and aggregate value of the base currency, and a copycat will not be able to match the official net on this measure. 3. The grim trigger equillibrium would doom such a blockchain if it becomes successful (look up on wikipedia) 4. There would be no dev team to support ongoing development if it overtakes the main net. 5. Network effects