All these businesses you didn't know existed

"Knife Pro" mobile knife sharpening van

When I teach Business-to-Business (B2B) marketing one of things that I tell students is that there is  huge volume of business, and a lot of specialized businesses, that the general public knows nothing about.

Does this van make house calls in residential neighbourhoods? I'm sure that it would, but the primary focus of the business is serving restaurants, hotels, and other food service businesses. The skills that make one a great chef are not necessarily the skills that make one a great knife sharpener. And even if you are both a great chef and a great knife sharpener, then surely you have better things to do with your time that sharpen knives.

So, small service businesses like this serve the niche needs of businesses like restaurants.