A few years ago I looked into canceling my #FrameMaker subscription about half way through the year. When I saw that 50% fee, I decided to keep the remaining time. But then canceled when the term was up, and have never subscribed again.
If #Adobe offered an easy-on, easy-off monthly option, I would likely still be a reasonably satisfied user. But instead I recommend my clients to bail, or roll back to an older, pre-subscription version.