Me (and others in this thread).
I have a 5 bedroom house that I rent out 2 rooms, but not interested in accepting more people unless they are friends or have a very high income.
At my home’s peak, we had 6 adults living there, now its at 50% capacity.
How many high income individuals want to share a house with 5 strangers?
Apparently not many hence the empty house.
In SF and Seattle during hiring booms, a lot of young workers move to the city with no social connections, so they start their new life in hacker houses to kickstart their friend group.
It's surprisingly common in places like SF, and near popular colleges.