I think the main issue is identifying business that will pay for their websites to be updated regularly. And what services you have to offer.
Not saying websites aren't important. But we live in an era of social media, Facebook, Yelp, Instagram, Twitter etc.
Many businesses seem to value those services ahead of a website.
If you had a restaurant/florist/mobile shop, would you pay someone to update your website every 3/6 months?
I think it's a lot more tricky.