Certainly if someone was to 'rip' an existing website design wouldn't they just grab the HTML+CSS directly? Wirify is definitely not intended, nor useful, for that.
In some cases. In others, you might be starting with a simplified wireframe (and these remove identifying brands, colours, etc) or you would screen capture and use it as a layout base in PhotoShop.
Certainly if someone was to 'rip' an existing website design wouldn't they just grab the HTML+CSS directly? Wirify is definitely not intended, nor useful, for that.