Re: Symantec and McAfee (among others) have not responded
I wouldn't worry about particular companies, as they need to sell their products in all markets, so they aren't going to flag up (say) US malware, because they'd find themselves squeezed out of the US market. They won't piss the Russkies off, because the penalty is a bullet in the head. They won't piss GCHQ off, because in addition to being the NSA's poodle GCHQ probably already have their home browsing habits, banks details and choice in ladies undergarments....and so forth.
It's notable that the Flame malware was reckoned to be in the wild for two years before being spotted, so in addition to the question of whether commercial AV vendors dare identify obviously state sponsored malware, there's a question of whether their product can routinely spot "state grade" malware.
Even professional criminal malware writers have a tight budget, a limited attention span, and a need to look over their shoulder - but they don't need to be too stealthy, because they are playing a numbers game of hit X million machines, infect Y thousand, release payload and chalk up benefits. State sponsored hackers have all the time, money and resource they want, access to inside info on the OS and applications, and an obvious need to evade much more professional levels of protection.