AFAICT you're living in that world. Just take a look at github. As of 2 years ago there were 128 million repos

https://towardsdatascience.com/githubs-path-to-128m-public-r...

And maybe it's just me but AFAIK the vast majority of repos are personal projects done for fun, not for profit. Even if that number is inflated because of forks I'd just wager the majority of original repos are projects for fun, not profit