Keep in mind that a developer being paid $100K gross actually costs the company way, way more. Health insurance and other benefits, cost of office space, electricity, transportation, and so on. It varies greatly between companies and countries, but it's not unusual to have "man year" cost 2x more than what is actually being paid as direct salary to the employee.
Office space+additional overhead could be reduced by remote workers. That would involve transforming management culture though, which is long overdue for it. And I'm not talking about some new crappy book about moving cheese or others of its ilk.
