Microsoft will merge separate versions of Windows into one unified operating system

The Verge reports Microsoft will merge separate versions of Windows into one unified operating system. This sounds like something an engineer would want, but my Apple ecosystem experience tells me that apps on different platforms (touch screen vs mouse, little screen big screen) are more different than you'd expect. I want a small text editor for notes on my phone, not Word. It important to share the data and some of the code but not the user interface (which is a lot of the code). We'll see how it works for Microsoft.