The problem is, Ubuntu is
completely unsuitable for a mobile phone or tablet.
I bought one last year and had to return it because it was functionally unusable - https://shkspr.mobi/blog/2016/05/the-ubuntu-tablet-a-review-...
The OS doesn't support modern features like multi-touch, many apps require a physical keyboard, it can't connect reliably to Bluetooth devices, app switching doesn't work - even icons are missing from certain apps!
There's no app store to speak of, just a small collection of apps which haven't received even rudimentary testing. That's before we even get to the lack of "killer" apps like Angry Birds, Dropbox, Spotify.
> Carriers are also interested in this flexibility.
No, they aren't. I've just finished 10 years in European telcos - they don't care about flexibility. They care about profit margin and making sure that people don't ring call centres to complain about broken hardware.
My old employer (O2) sells a bunch of Cyanogen based Android devices - because the cost is right and the services are good enough. Ubuntu isn't even close to competing with that yet.
> Some they may provide themselves and some by well known providers; but by not being able to select options for those base services they have less flexibility on what they can do.
This is factually incorrect. Providers (in the UK at least) are able to bundle services and apps with iPhones, Android, Windows Phone. I've worked with handset manufacturers to add DropBox, replace DropBox with something else, have apps preinstalled, remove bloatware - and everything in-between.
> So that effectively makes it difficult for the carriers as well as alternate service providers (e.g. Dropbox, Spotify, etc) to compete.
Again, that's not really true. Dropbox has a multi-million dollar marketing budget. If your new service can pay an operator €10 per customer - guess what - they'll push you to the front of the user's home screen.
> I think that Ubuntu Phone has the fundamental DNA to win in this race.
I don't. I've installed Ubuntu on my MacBooks, my laptops, my servers, and my TV's media box. It's a brilliant OS. But it doesn't work on touchscreens. It cannot meet the efficiency demands of small battery devices. It has no alternative services which even come close to what's on the market.
I love Ubuntu - but I wouldn't let it near any of my phones.