Why does Hollywood love changing character names?

I'm in the middle of writing a paper on Brokeback Mountain and I noticed this in a paper I wrote last year that had to do with films as well. Why does Hollywood change the names of characters for the films? In Brokeback Ennis's daughter goes from being Francine to Jenny and Alma's second husband goes from Bill to Monroe. The paper I wrote last year was about adapting stage musicals to the screen and tons of secondary characters received name changes. What's the point?Why does Hollywood love changing character names?Director's and screen writers like to claim things as their own. Changing of names is the easiest change to get away with that creates differentiation from other versions. Obviously they go for bigger changes as well, but those take a lot more selling to get done.

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