Bitcoin is only one coin and quantum computing isn't as close to reality as mainstream media would have us believe. Part of the FUD crypto campaign.
As for government owning all cryptocurrencies, that's laughable. There are 1,398 cryptocurrencies listed on Coinmarketcap.com today and several more issued every single day. That pace is likely to increase in 2018. No way governments will control them all, especially since they still haven't decided how to respond to crypto. And considering that a 15 year old can create a new blockchain in 15 minutes. Oh, and Jamie Dimon is a douche of phenomenal proportions.