The common pattern in the responses of most organizations is "word play".

Skype -

    Skype wasn't changing its protocols to make it possible for the government to eavesdrop on users, 
    because the government was already able to eavesdrop on users.

Google and Facebook-

    Google and Facebook insist that the NSA has no "direct access" to their servers. Of course not; the 
    smart way for the NSA to get all the data is through sniffers. 

Apple-

    Apple says it's never heard of PRISM. Of course not; that's the internal name of the NSA database.

I am surprised that such large organizations are using "word play" to put a veil on their activities. Are they not aware that they would be found out in this Internet age? Personally, I think this would make an interesting social science study.