I don't think OP intended to mean exact replica, but more or less, why aren't mid-range sedans made to look more like the exotics. In other words, more corvettes, less impalas.

It's more nuanced than that though, because OP presumably is not talking about a specific model, but rather one with the likeness (and possibly sound) of a Ferrari.

For example, I don't know what the next Porsche model is, but I know I'll be able to recognize it when I see it because they are so distinctive.

See what happens in places where such trademark protections don't exist: http://www.carnewschina.com/2016/11/11/zotye-sr9-porsche-mac...