Yeah blackberry was making a loss. MSFT certainly isn't. Not even in phones
BB had to lease its name to TCL- the owners also of the alcatel brand. BB10 is dead, their OS is dead, now its android. That's a far bigger re-entrenchment than MSFT ever did (abandoning their OS), and a lot of former BB fans are not happy about the move. At least some of those former BB fans, have in fact, come over this way.
While the keyone is certainly successful, I think if a similar thing ever happened to MSFTs phone efforts, it would probably signal a BB/IBM like collapse/pivot of the whole company, and a failure to launch for windows 10 and UWP. A scenario almost so inconceivably bad, that even being as unlikely as it is, I'd rather not think about it.
There is a device in the works ATM, as can be ascertained for certain not only by triangulating bits of information, but for the fact the new device and its sku is already in the windows code.
It has, in some form, dual screens and a detachable hinge, which can be deduced from said code.
I expect there will be a return for the main branch for win10m itself, and most likely the alcatel 5s will have a windows variant, and the x3 a refresh. Who knows msft may even do one last Lumia, but there is really very little to indicate worry about win10ms future imo, outside of worry itself.
Because -It's tied in directly with the UWP/one OS platform efforts - MSFT _requires_ a small screen pocket device for the development of those plans. But being a "tied in" effort, unlike any others, because of the hybrid OS concept, its a battle that is fought on multiple fronts - tablets, MR, PCs, laptops, wearables, smart devices, and because of that win10m is not the only concern for MSFTs future - the MAIN concern is UWP, for which MSFT needs a stable userbase of users using multiple form factors and input/output methods. They can't really be blamed for putting win10m on a slight backburner given this. Windows on arm, for example, on tablets and laptops, is a key piece IMO to the expansion of the UWP platform - and I personally can see why they have given this centre stage. Same with MR, and fluent design, and same with the intelligent edge - MSFT has to keep a lot of balls in the air, and time everything well.
If MSFTs new device can be well received by some, and UWP can be given a boost, everything is still on track. They don't need to win the world right away, simply put a log or two on the fire of UWP.