Most "open source" projects aren't really open. They're public code repositories with closed contributor circles.
Real open source is when strangers can show up, contribute meaningfully, and get recognized for it. Everything else is just free-to-view code. You can check out all the repos that accept outside contributors via Scout Game. 

Fantasy Sports with Onchain Developers. 

Scout. Build. Win. Brought to you by the builders of CharmVerse.

https://scoutgame.xyz/

Or sometimes they are actually a funnel for the entreprise or closed source version of the software. 
Nothing bad with that, I actually like it, it’s a good way for brand awareness, kind of freemium model.
Agree with your take and like how @scoutgamexyz helps change that.