Others might wish to see it as him setting his own bounty price, to find exploits in software, selling them to the big developers responsible for that software so that they can fix the vulnerabilities.
But I don't see it that way.
My thought was him selling exploits to the DHS, NSA, and CIA, even if he ends up unknowingly doing it, by selling them to one of their umbrella corporations. And what do you think they would do with those exploits?
Seems less like revenge and more like greed, if you ask me.