I'm surprised they employed him at all, if that's their attitude.

If they expect "the proprietary ... know-how" and experience of all employees to remain confidential, then surely they can't have expected him to use any of the knowledge he gained working anywhere else previously, when he started working for them.

If that's the case, employing Carmack gains you nothing over employing a fresh new graduate, except that it costs a heck of a lot more.

Or are they just another bunch of fucking hypocrites?