But, I think you overestimate the quality of a Hollywood blockbuster.

Imagine if you put Steven Spielburg in front of a hypothetical movie machine. A machine that could automate everything down to the actors and voices, so all the director had to do was write the script, place everything, and direct all the action (yes I realize something like this is years away). I'd bet that he could produce a movie at least as good as the average summer blockbuster.