Why do recruiters ghost?

I've done multiple interviews in past few months and I don't get why recruiters ghost you. It bugs me a lot when the recruiter shortlists your application and after further rounds decides to ghost you even when you are up for the next round.

Is it too much to ask to respond to a simple text or mail? After investing tons of hours in applying, going through several rounds of interview, working on long ass assignments only to be finally ghosted. There were very few recruiters in my experience who had communicated transparently during the whole process.