Right now there's just one open source ATS that got a bit of negative feedback because it's licensing and security issues.
So, my question is: How do you know if there's a need for a OSS project? Do you treat it just like a commercial project and do the market research before actually starting to work on it?
Sadly, I don't have any connections on the industry which makes things a lot harder.
Trying to solve other people's problems which you don't share isn't likely to lead to real solutions, nor be appreciated by those you're trying to market it to: "this person has no clue what our needs are and they want us to use their solution to the problems they imagine we have"
If you aren't passionate about a thing its really hard to motivate yourself to work on said thing.
If you're making something you want to make a living off of, then naturally treat it like you would a commercial product.
How do you make money from free software? Short answer --- you don't.
There may be a need/desire but there is no real "market" for Open Source.