I doubt the PHB would use the same line on Alice. Alice would simply be hired by the competition and watch her former customers migrate to her new company as they become frustrated with the old product sans Alice.
The PHB does manage to see the blindingly obvious once in a while. Dilbert has had near-infinite chances to bail out. But everyone knows he has zero useful skills. Chiefly, a complete lack of the ability to lie professionally. The angel investors know squat about engineering. All they know is what colorful lies and pretty CGI the engineers show them to suck their wallet empty.
Has Catbert possessed PHB?? This new, mean, faster-thinking PHB is not the dull, obtuse PHB we've come to know and deride. Or, he's back to eating a lot of dark chocolate for a brain-boost? (meth-laced dark chocolate??) What???