Because you are afraid of being dropped out there into a months-long grind to find anything. I'm saying that if tech companies hired like normal, sane companies, that would not be a fear. Sure, they might not keep you through probation (and YOU have a lot of influence over that). But if not, you go start at another company. That's the benefit I'm talking about with not having stupid long, arduous interview processes: Not having stupid long, arduous interview processes.