Hollywood Old and new

Given what youve learned this term, would you say that Hollywood Cinema, has significantly evolved over time, or has it remained pretty consistent, in its predominant narratives, genres, structural conflicts, ideologies, aesthetic approaches, and engagement with prevailing social and political issues?
If you think its changed, then how? If you think it hasnt changed, but rather has remained consistent, than why?
(Respond with a convincing argument, and supporting examples, based on your learning throughout the course.)