In theory Canonical could lock down Ubuntu like that, but it would be the end of Ubuntu. Switching over to Mint or Debian is not a big deal for majority of the linux-users and also Ubuntu would lose all the advantages they can currently pull off from Debian package maintainers. Also I suppose it would bring a ton of headaches with licenses, but IANAL, so don’t quote me on that. And, obviously, that would kill snapcraft too as I don’t see any incentives for developers to support walled gardens for free, so it wouldn’t be all bad.

Philip Morris: 1 pack of cigarettes per day is not addiction.

Team expects, may be useful, could be used, prototype, are currently investigating and so on. Cool piece of technolgy, but no even mention when they’d expect that to be commercially available, if it’s even possible to manufacture in commercial scale. Like many other new battery chemistries and technologies, it shows promise and makes a good headline, but at this point that’s pretty much it.