I don't think it is fair to say "we almost never ask for feedback". Every dev I know asks for feedback during the interview process. They rarely get it because of strict company policies on not giving out feedback. Simply asking does not make a company give feedback. I've found feedback can be gotten from even the strictest companies though but it has to be "hacked", for example, by asking somewhat indirect but still very feedback-related questions to your interviewer at the end of your sessions when you get 5 minutes, etc.