Jobs was evidently pissed to lose those 3 people, so it’s safe to assume they were very senior folk. They likely were involved in the iPhone design to trigger this CEO panic
Imagine having vested stock before the release of the iPhone. Imagine getting paid a top dollar package to take your experience to a competitor.
Those three people made out like bandits. One could only wish to be in their shoes.
No need for thoughts and prayers, if they worked at Apple as engineers at that time and weren't dumb enough to sell their shares they are likely multi-millionaires at this point.