Ask HN: How to sustain yourself with an open source business model?

Hey! I'm currently working on a social platform for developers with tons of cool features (hopefully one day you'll see it on hn) and I'm hesitating on whether I should go opensource. It would really make sense with this tech platform and I'd love to build this product with many other people but, I also want to be able to sustain myself.

I don't find it fair if other people contribute to the project and then I get the profits. How can I have an open source model that survives without profiting off other people's labour and that can sustain me?

Thanks for your help with this problem I am facing.