Criminals Were Largely Successful Until Time Travel Crime Ended
Due to the overwhelming superiority of criminal forces and tactics, and the willingness to use inhumane and illegal tactics to achieve criminal aims, criminals were largely so successful before the sudden halt of time travel crime, that it would be fair to say that all living beings, aside from William Atreides, were created as a result of time travel crime, and therefore were born in timelines created by, and largely totally dominated by time traveling criminals.
Absolutely everyone else needs to be rescued...