IT Director to Sales Guy: "We just got $20M in grant money for getting broadband across the state. Can you get me some numbers?"
Sales guy to engineering team (partner or internal): "Hey I need lots of boxes. They've got 1300 sites."
Engineering team: "Ok.. what do they need?"
IT Director: "Pretty sure my network guy says everything has to have redundant power supplies and at least 1 ethernet connection. To do a survey for each site would take over a year due to bureaucracy, and I've got 3 months on this grant"
Engineer to Sales guy: "Ok I built out those routers. Do they really need redundant power supplies everywhere? 3900's seem big."
Sales guy: "Ya, that's what they said. Anyways this came out below budget. Thanks!"
IT Director: "Looks to be under budget, meets our needs, thanks!"
.. meanwhile IT management/engineers aren't involved. Somewhere, someone didn't slow this project down to do due diligence. That or somewhere buried in some document is a requirement for redundant power supplies, but that sounds less likely the case.