I'd also like to say that this also happens with churches. Every church I've enjoyed didn't own their own building. Rather, they just rented space from the local high school, etc. These groups were extremely focused on building tight-knit communities, and were pretty free to adapt to changing circumstances. Conversely, I can think of a few churches with buildings, where the primary focus of the staff was maintaining enough donations to pay the mortgage.

This sort of phenomena applies to other communities in addition to technology businesses.