I think anyone would like to subscribe if the price rang a fair bell in the mind of the consumer. Most subscription services try to extract profits from the first month itself and thus look priced a bit too much. I think, if they would offer more value to the user, and as such, if the value unfolds over a period of time for the user, therefore, the profits, anyone would keep subscribing. Of course, assuming then, that the software is kept updated vigilantly.
It has to be a different, more vigil approach than toward a standalone piece for the subscription model to succeed. Subscription is not just breaking the cost down to monthly. It is more. It is a service! Nobody calls a standalone a service. There's the cue!
Example:
I have subscribed to Office 2016 Business Premium on my Mac. I will not pay $229 for a standalone. Why?
1. The $229 covers me for 3 years of monthly subscription, at around which time, I hope a new version comes up.
2. Subscription offers me use on up to 5 devices. I am covering 3 already - Mac, iPhone, iPad. Standalone would be just the Mac.
So, more value in the subscription model at a price that evens it out over 3 years, which is roughly the product life cycle of a Mac Office piece. (It is true that Office 2016 onward they are going to bring upgrades yearly, but still.)
This is excellent execution of subscription model on part of Microsoft. I think, they are making a standalone for those who know they won't upgrade till it dies, or who will use on only one device and would rather not bother with a monthly payment.