Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
ProTech, I believe you're right. Indeed, MS announced with Office 2013 that it would be the last non-subscription edition. Clearly they backed off of that and released 2016. Adobe has done that with their entire "CC" line of products--Photoshop, etc. However, they did respond to a serious outcry when they announced $20 a month for Photoshop. The end price became $10 a month. That's still $10 a month for the rest of your life. So it would be with office. Software subscriptions are like annuities for the software publishers, so it will happen at Microsoft.
Adobe went to subscriptions because their upgrade versions were not sufficient upgrades or new features for users to buy them. Even serious users would buy only every other version at most. Is that not the same case with MS Office? Not one user I know has felt compelled to upgrade from Office 2013 to 2016. My clients never upgrade, since the computers are replaced after 4 or 5 years, and they buy a new one with the current Office included.
Many amateur photographers moved from Photoshop to Lightroom (a low end photo editor from Adobe) or Paint Shop Pro, or others rather than subscribe. Many others opted to upgrade to the last purchase version, Photoshop CS6, and proclaimed they would stick with it as long as it still worked. In my household, my wife moved to the subscription Photoshop CC, and I stuck with Photoshop CS6. Since that change, my wife has spent about $340; I've spent -0-. In the word processor, spreadsheet, presentation graphics realm, I can see people retaining Office 2016 as long as it will run and then moving to Open Office or Libre Office. I don't know what I'll do. Now I have my Action Pack with all the licenses I can use. When I retire, I'll probably stop my Action Pack subscription and then move to Libre Office.
One thing is certain. Microsoft is almost big enough and rich enough to make someone else serious about competing. That someone else could easily be Google. Competition is the universal solution to monopoly greed.