Too many overspecifications for kit, when actually, there are some pretty funky commercial solutions to military problems, particularly when it comes to Comms and electronics. It might not be electronically "Hardened" or meet all the mil std requirements, but if it does the job, whats the issue?
VR, maybe it has changed since I was around, but one of the issues against COTS was it threatened all those cosy jobs for the "specialist" advisors from all over the place. They would always manage to whip up a scare story about how the Tempest clearance on a can-opener was an essential requirement if their (formerly DERA) advisor was involved in that procurement. But that was a few years back, I'm sure there is no place for parochial short term cronyism in today's procurement world.