The question that we will never know the answer to is, how would the world have reacted to a no bailout? For crypto to  be accepted by the  majority of the world, and thus survive, hard decisions need to be made in critical times. Was the single bail out the correct decision, I think so yes! At least for the survival of Ethereum. Will Ethereum survive another big bail out, I don't think so. Can there be a truly autonomous system? Only time will tell. ETH may be a time bomb with the consensus change, but think of it differently: How much electricity is used by all the POW machines from all the POW coins? It surely can't be sustainable for the future! We had the industrial revolution already that wasted much of natural resources. Lets not repeat that again! My opinion is that the crypto world is watching ETH, and when they manage to pull off the POW to POS change all other coins should learn from it as less electricity use will only help in the survival of Crypto for the future.