He's pointing out that people like security well enough, but they want to get stuff DONE even more, and that most people will take the calculated risk to be less secure if it makes them more productive at lower costs.
Also, too much security can backfire. I call this the Garbage Compacter Rule: In Star Wars it was too difficult to shut down all the garbage compacters on the detention level, so R2-D2 just shut them all down. Similarly, when you run up against a security system that's stopping you doing what you want, but it's hard to poke a hole in it, you sometimes just "shut them all down" to get some work done. You're left with less security than if the original block wasn't there.