Hi Diane, thanks for this info. I suspect that the primary reason that so few people are using Publisher is that most people who install Office 365 on Windows don't realise Publisher is included. I only know of the existence of Publisher because I used it in the pre-365 era as part of an office suite I purchased. When I actively went searching for how to purchase it, I kept going round it circles with me being directed to the Office 365 page which then mentioned nothing about Publisher!
Nowadays, you kind of have to know it exists and go actively searching for it, because Microsoft certainly do not go out of their way to inform you that it is included. I have an Office 365 Family subscription, and I certainly didn't know it included Publisher.
For example, if I look at my Office 365 subscription, it shows the page I've uploaded here. No mention of Publisher among all the installed apps, and yet plenty of other apps I am not using, so it isn't that it only appears here if I've used it, or something like that.
If I actively search for publisher in the search box on that page, I get taken to an advert page telling me I can buy or "try for free". (see second image) It says if I already have a 365 account to sign in, but I am already signed in, lol (as can be seen by the "Brian" account icon top right of the Publisher page. So this suggests I have to purchase it additionally. It doesn't take me anywhere useful that tells me how to actually find it!
If I click the "Buy now" or "Try Now" links, it takes me to one of the following pages. No mention of Publisher, and certainly no mention that it is already installed, given that I already have the Office 365 account. It simply refers me back to Microsoft 365 with no further hints that this is even relevant to using Publisher.
 and go search for it on the task bar. There are no icons for it in the installed Office 365.
Forgive me, but it feels (almost) like whilst Microsoft may be continuing to support it, they are hiding its existence so well that in future they'll be able to justify retiring it because "almost nobody is using it". Of course I don't think Microsoft are really that duplicitous, but it really does feel like it.