Not really. The ship of a single exchange or wallet dominating Bitcoin or the crypto space has sailed. It's quite hard for Coinbase to have any significant cont

Not really. The ship of a single exchange or wallet dominating Bitcoin or the crypto space has sailed. It's quite hard for Coinbase to have any significant control over the network. (ie: Bitpay tried that and now they are mostly history). Coinbase provides a regulated environment for trading crypto-currencies as well as on-off ramps to traditional finance. It's definitively a plus to have them around.