Subscriptions from Adobe were meant to soften the initial sale, but Adobe's own rigidity with the subscription schemes on release shot them in the foot, as organizations had to wait a long time for a model to come out that met the needs of small/medium businesses who previously could have made due with a few perpetual licenses. The storage was pretty sad even at the time of the switch, so that wasn't a compelling sales point either.
I think Adobe just didn't pull the numbers they were expecting when they switched, and now they're stuck with this model and infrastructure they don't know what to do with.
>Creative revenue in the first quarter of fiscal 2018 was $1.23 billion, up from $942.2 million in the first quarter of fiscal 2017 and representing 30% year-over-year growth.
So not only are they still selling, but subscriptions increased 30% over the past year. Clearly it's working for them so much that they're finding success doing the same thing for the document cloud:
>Document Cloud revenue in the first quarter of fiscal 2018 was $231.0 million, up from $195.9 million in the first quarter of fiscal 2017 as we continue to transition Document Cloud to a subscription-based model.