How do you define mercenary?

Here's how Wikipedia defines it.

Has anyone else noticed this extreme bleedover from the cyberpunk of the 80s and 90s to the scary news headlines of the present??

He was a perpetual outsider, a rogue factor adrift on the secret seas of intercorpo- rate politics. No company man would have been capable of taking the initiatives Turner was required to take in the course of an extraction. No company man was capable of Turner's professionally casual ability to realign his loyalties to fit a change in employers. Or, perhaps, of his unyielding commit- ment once a contract had been agreed upon. He had drifted into security work in his late teens, `when the grim doldrums of the postwar economy were giving way to the impetus of new technologies. He had done well in security, considering his general lack of ambition. He had a ropy, muscular poise that impressed his employer's clients, and he was bright, very bright. He wore clothes well. He had a way with technology.

Count Zero by William Gibson

I wonder how many Blackwater personnel fit this description?