That isn't to say there will never be an offline version, but I feel that the days where Microsoft sells Office to John and Jane Doe are starting to sunset.
Microsoft had indicated that 365 was the future, and if I was a betting person, this 2019 may be the last 'retail' version we see. But the features aside, let's take a moment to remember that no one knew for sure up to a point if Office 2019 was actually going to be a thing or not. I'm sure everyone can argue the merits of the new Office, hell LibreOffice does everything I need it to, so that's what I use. I felt bad for her since I was the one that recommended libreoffice in the first.