In fact, Microsoft was so confident that its phone business would be a success, that the aforementioned 1 billion goal was predicated on a significant number of Windows 10-powered smartphones to add to the personal computers that will be upgraded or replaced.
Remember the target of 1 billion devices running Windows 10?
The reason for not expecting to meet the target was said to be the shift from the smartphone business.
Windows and Devices boss Terry Myerson initially made the claim at the firm's developer conference, Microsoft Build, last year.
Earlier this month, it scrapped its Finland phone unit and laid off more staff. Microsoft plans to achieve the target even though it may have pushed the deadlines a little further.
The company made the announcement previous year to much fanfare, using it as a marker of the expected success of the platform, especially as it was offered as a free update for many customers on older Windows platforms. "But my numbers relied on Windows Phone continuing to sell at least 50 million handsets per year, in addition to upgrades, for a total of at least 200 million Windows 10 Mobile devices in the market by 2018", he said.
However it thought that the majority of those one billion devices would be PCs and tablets which was a market that dried up quicker than a pub in Utah during prohibition.
Microsoft has released a new exciting update for the Groove Music app on Windows 10 devices that provides access to the new Explore feature with curated playlists. With existing consumers upgraded, Microsoft will be reliant on new device sales, enterprise purchases and the Internet of Things to drive usage increases.
But they noted in a report that Microsoft is also offering the new software as a free download for people who want to install it on their existing PCs. That push was boosted by the decision to make it available for free to users of Windows 7 and 8. But that fervency has clearly cooled off dramatically in the past few months - and will likely do so after this month when Windows 10 upgrades will no longer be free.
"Extensions in Windows 10 Mobile was always iffy, due to limited resources and user interface restrictions", notes MSPowerUser.