> And what appears to be a "business decision" could be a serious setback for the person on the other side of this transaction. Granted, as a startup founder, I am more exposed than someone at FAANG, but don't fool yourself - either way, someone wasted a lot of time and money on giving you a shot, and more importantly, they declined all other candidates.

Yeah, sucks, that's life, if that triggers you emotionally you have no business running a startup.