Bad news for those of us who would love to see Google (GOOG) expand its fiber network out to the entire country: Doing so may be prohibitively expensive. Business Insider points us to a new research note from Goldman Sachs estimating that it would cost Google an estimated $140 billion or more to make Google Fiber available to the rest of the United States. Since Google has “only” $45 billion on hand and since its annual CAPEX budget is $4.5 billion, it’s highly unlikely that Google Fiber will be rolling into most peoples’ neighborhoods in the near future. And that’s not the worst part — according to Goldman, “even a 50 million household build out, which would represent less than half of all US homes, could cost as much as $70 billion,” meaning Google would likely have to take out a major loan just to get Fiber to most major markets.

Prior to joining BGR as News Editor, Brad Reed spent five years covering the wireless industry for Network World. His first smartphone was a BlackBerry but he has since become a loyal Android user.