That's a nice idea. But Open Source authors have lives too. Friends, Family, etc. as much as I'd like to live rent free, I wouldn't want to move into a "camp" for Open Source authors.
If someone has enough money, they can lease/buy an entire building (say a 50 apt building in NYC, Seattle or wherever) and let people live in those apartments (for $1/month in rent or something like that). This doesn't need to be a camp or tents in some remote place. This way people can live in those apartments with their families. In cities like NYC, rent is most normal people's biggest expense.
All it takes is just one rich person (there are many in tech) who believes in the idea (or some variation of it) and it can be done.
That said, I was mostly thinking of young/single people when I wrote it. People with kids have more challenges