Sometimes, this happens…
“Hey, SEO guy!”
“We don’t come up on Google when I search for hats.”
“We don’t have any pages optimised for hats. We also don’t sell hats.”
Alright, I might be exaggerating for effect, but not by much.
Remember, SEO is weird. You will rank for things you don’t expect to. You may not rank as well for things you expect to as you want to. You definitely won’t rank for things that you don’t have on your site.
Think about it – why the hell would you?