Photoshop hasn't been a one time fee for over a decade at this point. The last traditional single cost purchase was Photoshop CS6 which I still use and refuse to ever give up.

Intellij is also a subscription, although with yearly subscriptions you get a perpetual licence for whichever version you get while the subscription is active.

Have not Excel and Photoshop gone subscription?

You can still buy a one seat perpetual license to Office

Ok.

Why would you?