I did ask the same question in 2016 [1] and got some really interesting answers.
I'm still chasing the dream of having a side-business and earning some side money, but with web apps it means mostly SaaS. Personally I hate rent-seeking behaviors (I'm not alone, it seems – “Tell HN: A Conversation Needs to Be Had over Subscription Software” [2]), so I'm trying to know what people are doing regarding desktop apps.
Are people still building desktop apps? More specifically, can you make a living (or earn some side money) in 2022 by selling a desktop app?
Please share it with us, or are we doomed to build web apps and SaaS for the foreseeable future?