Your point needs more attention IMO. Most updates for most software don't add usability or convenience for the end user. The way conversational rhetoric with my family and friends seems to have transitioned from "wow, these computers are cool! This will really help with x" to complete frustration.

Jonathan Blow posted something a while back I thought was interesting: type "frustrating" into Google image search. Notice anything about the results?

https://www.google.com/search?q=frustrating&tbm=isch

Yes -- and subscriptions in some sense may worsen this problem, in that subscriptions create an incentive towards ongoing interface and feature churn, to create a notional justification for ongoing revenue.

Like https://news.ycombinator.com/item?id=29983959

Forced updates that remove or disable features people use.

Reminds me of XD versus Sketch.

Adobe created and added XD (Sketch competitor) and put it into its CC.

Sketch's still doing great but I honestly don't know how long it will be the case as XD becomes more mature.

They have to justify that subscription right? Every yearly version upgrade of Adobe is filled with productivity-breaking bugs that don't get fixed until months later. Everywhere I've worked, artists know not to update to the latest Photoshop until the first patches are released and it's been evaluated. Why should a subscriber put up with that? The only recourse is to not subscribe, which isn't an option if you're content with a current version of the software.

There is a serious amount of diversity on the app stores, though. It's not as if you must use Photoshop, with zero alternatives.