Not only that, but as I keep pointing out, lots of theaters have more screens than they can profitably fill with just blockbusters. Which is why they, ya' know, don't. They're not making donations to character dramas. They recognize, contra the OP, that there are hundreds of millions of people in this country and they don't all like the same thing, and it's profitable to exhibit films of all types.
It ain't complicated.
It ain't complicated.