Question: why did once upon a time in hollywood end like that?
Answer: As Once Upon a Time… in Hollywood nears its conclusion, Quentin Tarantino uses the announcer to speak to his audience, promising them that at last, the bloodshed will begin. ... But Tarantino chose to rewrite history, having the Manson “family” fatefully mistake Dalton's house for Tate's, and never make it out again.