Having a grant rejected is a giant pain in the ass. More so when the rejecting institution fails to provide any feedback as to the problems and promise of the rejected approach. In any event, it also makes it hard to do the utterly necessary work of *applying for other grants*. I wish there was a better model for science than the medieval patronage model so many of us in academia work under. But there isn't, and the market-driven approach makes for shitty science. As such, one eats the pain and continues the slog.
*slogs back to work*