I think Jews in the US were initially drawn to show business because they were a minority without great job prospects. Acting used to be frowned upon as a low occupation.
When the movie business took off, there were already many Jews in that industry and they were able to achieve success. The sense of community/tribalism probably help pull more of them in.
I have no idea about Israel. Perhaps there is less of a drive to stand out creatively when you aren't a minority. Or maybe Israeli culture simply doesn't have the worldwide appeal of American culture.
100 best Israeli movies - http://www.imdb.com/list/ls057083700/