I don't understand why SO doesn't generate enough money for the founders to find an office space without having to worry about cost. "Before I would have walke

I don't understand why SO doesn't generate enough money for the founders to find an office space without having to worry about cost. "Before I would have walked around New York for weeks looking at all the office space to save $2k/month." They receive 25M page views a month. So even at $5CPM that's $100k/month in revenue. I'd think that would be enough income to get the ball rolling in an office downtown. Maybe they have a hard time selling ads?