In 2005, Sprint bought Nextel in a $36 billion deal that was meant to be a "merger of equals." But combining the companies was tough: Nextel's network ran on a different technology than Sprint's, creating a wireless infrastructure nightmare. Sprint (Fortune 500) racked up expenses over the years as Nextel's "push-to-talk" setup fell out of favor, and those subscribers , fled in droves. Finally, Sprint announced in May 2013 that the Nextel network would be shut down one month later. It died Sunday night.
A brutally honest Tumblr offers a rare window into how a failing startup goes under.