MS could have been there, in fact they almost were there, but they've let the mobile side drift aimlessly to the point were neither vendors nor third-party developers have any faith left in their mobile efforts. I could never wrap my head around how strategically MS could just let mobile go and not take the fight. It seems so integral to so many other efforts.
Another problem, is continuum really a good idea for anything else than niché scenarios? I have trouble coming up with use-cases. A laptop you can bring with you to meetings, on planes etc. With continuum you need a lap dock for that.. but then you have a sub-par laptop and a phone.
I guess if I were travelling it could be nice to just bring a mobile and connect it to a setup at a co-working space. But is carrying a dell xps 13 around really such a big deal? and what if I want to use a computer outside of the co-working space/office?
Then we have x86 apps on the mobile platform. There's been a lot of people wanting to see "Desktop" apps on mobile... I can understand that from a "continuum as a computer" perspective, if you buy into the continuum premise, but I can't see x86 software ever work well on a mobile form factor with the battery limits and UI challenges that comes with that.
So what is Microsoft's plan, now it seems they're just throwing stuff on the walls and to see what sticks. I'm a bigger UWP and .Net proponent than most, but I wish Microsoft would get their shit together and start executing across the board.
There's a bunch of stuff in UWP that could make the windows platform larger than the sum of its parts if you are in the ecosystem. Roaming settings/files, Notification mirroring and synchronization, universal apps, continuum, continue on another device etc etc. But it requires that there actually is an viable windows mobile that people wants to buy.