I think Facebook should buy one. I'm tired of hearing about nebulous data-mining aggregate privacy concerns; I want to be afraid of Facebook literally watching me, damnit!

Google owns a satellite service, (http://en.wikipedia.org/wiki/Keyhole,_Inc) why shouldn't Facebook and Apple?

Keyhole wrote the predecessor to the Google Earth software, but while it's a great name for an imagery company, they don't run satellites themselves.

Google did pay for a half share in GeoEye-1 (http://en.wikipedia.org/wiki/GeoEye-1) and have exclusive commercial access.

Facebook should buy one and burn it down over their headquarters. Just because they can :) .

SpaceX doesn't have the capability to launch this kind of satellite and won't for another few years until they get their Falcon Heavy launch system working.