Digital camera software by subscription is inevitable unless you are not connected to the internet
Operating system updates will break your digital camera software. Security vulnerabilities will be found that require updates too, etc, etc
I understand the whole tempest in a tea pot about Adobe forcing a subscription model for Photoshop and Lightroom (It's bad marketing IMHO for Adobe to have pretended that subscription was forever going to be "just an option") but unless you:
- don't connect your computer to another computer on the internet or otherwise,
- never buy new digitial cameras
- never upgrade your operating system
you need software updates for digital camera and other software. And this costs money to develop. It ain't free. (At least not with current software construction techniques which result in insecure, unverified software).
21st century cameras are social and on the internet and awesome-ized by software and sensors