The cost difference is probably rather small. CoWorking spaces in large cities charge something like $500/desk/month which we can assume is a reasonable cost of

The cost difference is probably rather small. CoWorking spaces in large cities charge something like $500/desk/month which we can assume is a reasonable cost of office space. That comes out to $6k/year/employee. Google's median employee pay is around $300k so we're talking a 2% difference in cost.