Sprint has suffered from years of epic mismanagement. From the disastrous Nextel merger in 2005 onwards. That meter gave them the low band spectrum they needed but it had only really started to be deployed in the past 3 years. The deployed wimax which was a misstep (although they had a build out deadline which left them no choice). They have constantly promised the moon only to deliver so late that they have already been outdone by even tmobile.
They have huge Hugh band spectrum reserves but needed to basically rebuild their entire network to take advantage of them. This frequently involved purchasing fiber from either their competitors or suppliers which get a lot more money from their competitors. Things weren't quick which didn't help. Their network was caught out by the jump in data demand and their response was slow and badly executed.
They could have done a lot, they had a great reputation which they seem to have pissed away. They are finally delivering on their promises which is good. The problem is they are not in great financial shape and their new owner could drop some dollar love on them but seems hesitant to. Sadly their future is unclear, I'm hoping their lead a great turnaround. The money massaging is either presale moves or the start of a significant assault on the industry.
Hopefully their new CEO has cleaned house enough as they have been pathetic for a decade.