1) In the same way how a bank use your cash deposits to do whatever they want with those bills, Coinbase can do the exact same thing because they never promised

1) In the same way how a bank use your cash deposits to do whatever they want with those bills, Coinbase can do the exact same thing because they never promised to their clients that they, the clients, were the owners of some private keys. This is basically the end of the story here. 2) Coinbase never said that they would adopt Bitcoin Cash. If these customers were really interested in doing some sort of investment they could have withdrawn their funds somewhere else months ago. Scared of using Bitcoin? then don't! sell your btcs for fiat and transfer it to your bank account, then transfer that to some other exchange that decided to adopt Bitcoin Cash.