Having dealt with some small business owners this past year, I know they get hounded all the time by people trying to sell them stuff (advertising, marketing services, SEO, etc.). One fairly new (in business for 2-3 years) owner told me that it just becomes the default to say no, unfortunately.

On the other hand, this guy already did the work and proved that he was getting orders for their restaurant. It seems like very little risk.

On the other, other hand, restaurants do have razor-thin margins and a lot of small business owners really don't like paying for marketing.