I depend on referrals for my business. Good old-fashioned word-of-mouth.
I don't advertise on google and I don't run google ad-sense ads. I don't want ANY company telling me how to run my business. I don't do
SEO or any of that other stuff either. No "site-maps" etc.. Personally I don't care if a search engine or robot ever finds my sites. More bandwidth for my customers to use.
5 years and I have all the business I need. I have no desire to "get rich". I just want to work for myself and make a comfortable living. I find that I can do that without google just fine.
I advise anyone that asks me, to find something where you can build a good customer list and work on keeping them. Repeat sales, without having to pay a commission to someone like google, are better than constantly having to find and register new customers.