Hard to believe anyone can be surprised by this news.
I am the 'computer guy' to a large number of friends, family members, and neighbors. Over the past few years every single person I've helped with their computer problems has used their Microsoft computer for nothing more than email, webbrowsing, pictures, and movies. They used their computers less and less each year with more and more of the tasks listed above on their cellphones.
Long gone are the days when almost every person needed to have Internet Explorer to do any sort of online banking. Any consumer company in 2018 is making sure that their services and content is a first class experience on Android and iOS.
Exacerbating many of the people I help is that not only do they have no use of Windows apps their Windows systems get trashed by viruses or spyware or other random problems while their cellphones just work.
All of these people would be better served by a Chromebook or something similar but almost none of them are aware of what they are. The demand would be even greater if these people understood that all of the problems they constantly are coming to me with are exactly what the Chromebook was designed to solve.