I agree, but generally if you were to ask to name 'some cities associated with film' it's reasonable to get multiple these days - if you had to choose only one

I agree, but generally if you were to ask to name 'some cities associated with film' it's reasonable to get multiple these days - if you had to choose only one you'd get Hollywood. I don't think that's very far removed from naming one city associated with tech (Silicon Valley) versus names a few cities associated with tech (which you can easily do, just the same).