Earlier quoted context omitted.
> But our businesses are viable as subscription services, and not as one-off or ad-hoc puchase models. Doesn't explain businesses that had been per-purchase for a long time and are now still switching to subscriptions though. (E.g. photoshop, jetbrains...)
Software used to require little maintenance work. You would buy your software and run it without a single byte changed for 5 or 10 years, and then buy a new version. This worked because OS updates were rare, and everything was local and file-based. In the modern era though software requires continuous maintenance, because we expect our data to move freely between all our devices and the cloud, because operating syste…
However, there are a bazillion other applications -- password managers, note taking applications, Git clients, you name it, for which this is not true. I made a very niche-specific GUI application in 2010-2012 (a search application for Dutch treebanks), written with Qt. It runs on Windows, macOS, and Linux. It's effectively abandonware or just done (depending on your perspective). I have released updates since then to make sure it keeps running on the latest OS versions. It takes me, maybe 2-4 hours per year? (Typically replacing some deprecated Qt APIs and I there was one libxml2 API change.)
I think a lot of software companies just want to get on the gravy train. Usually, their yearly price is close to what a perpetual license used to cost. So if you successfully switch to a subscription model, you have much more income than before.
The primarily loser here is the user. You are poorer after an application switches to a subscription model. If a company goes bankrupt or decides to pull the plug, better hope that your data is not in a proprietary format (while I can still run some old WordStar in DOSBox and open old files).