Just be aware that Oct 17 2020, Office 365's requirements will change, and at that time all perpetual licenses currently in the wild will lose their ability to access Office 365 features. Given that we're less than 3 years now on a $100-$200 investment in a perpetual OEM license of Office 2016, it's starting to make less and less sense to sell it.
So.... from the article:
Starting October 13, 2020, Office 365 ProPlus or Office perpetual in mainstream support will be required to connect to Office 365 services.
For my small businesses, about the only Office 365 service that matters is connecting to hosted Exchange, but that is the important one. So will there be a perpetual license for any Office version after 2016? One article I read said:
"The company is not ending development of perpetual versions of the suite, but users will need to move to the latest versions in order to access all of Microsoft’s O365 Cloud services."
Up until this change, the expense of Office 365 was high compared to purchasing a perpetual license and keeping it for 6 or 7 years.
e.g. Office Home & Business 2016 Perpetual = Total cost of $229.99. Keep for 6 years = 72 months = $3.20 per month
Office 365 Business Premium (lowest plan that includes desktop applications) = $12.50 per month x 72 = total cost of $900 (391% more)
Even if you assume a new computer every 4 years (aggressive replacement schedule), it's still $4.79 per month for perpetual vs. $12.50 per month for O365 = 261% more. I'll admit I don't know the difference between Office 365 Pro Plus and Office 365 Business Premium, but Pro Plus is currently $12.00 per month, so let's go with that.
With the new change, you can only use perpetual licenses to connect to hosted Exchange while they are in mainsteam support. Is there a rule for how long that is? Office 2013 was released in January 2013, and it's mainstream support ends April of 2018, or 5 years & 3 months. Office 2016, on the other hand, was released September of 2015 and it's mainstream support ends October of 2020, or 5 years & 1 month.
So if we assume that there will be an Office 2019, and it's mainstream support will end 5 years after it is released, then I think the economics are more complicated (your result changes based on when in the lifecycle you purchase the product), but still largely the same.
Let's take the worst-case scenario. Say that Office 2019 is released in October of 2018 and you need a new computer in September of 2018 and purchase a perpetual license of the only available product at that time, Office 2016. That means you can only use the product until October of 2020, or 25 months. Your cost is then $229 / 25 or $9.16 per month. Office 365 Pro Plus is $12.00 per month, or 131% more expensive.
Now move to the best-case scenario - purchase Office 2019 in October of 2018 and you get a full 5 years use = $229 / 60 = $3.82/mo. Office 365 Pro Plus is still $12.00/mo, or 314% more expensive. I think I'm going to keep recommending and buying perpetual licenses for my clients that don't obviously need O365 service besides hosted exchange.
It's no wonder MS is trying to force our hand. Why settle for $3.82 per month per user when you can get $12?
I'm sure all of this will be made moot when Microsoft removes enough other important features from perpetual licenses to "encourage" a larger percent to migrate to O365. For me, this current change isn't enough to do that.