You have to be careful with that premise, more clients* more income, in any case I think that your vision is very limited to small businesses, and basically face-to-face, today you can make money offline and online at the same time. That in fact is already a consideration no matter what area you are in, if you have only one you should be or have a presence in one of the two, the incorporation will bring new clients and perhaps income.

(*) Businesses are complicated depending on which area is related, a friend who increased his clients in your transport company,  saw how costs increased and not profits.

The routes grew and he had to increase costs for new trucks and associated personnel, the growth of customers meant an increase in expenses that he could control but fortunately it took a couple of years to have associated profits.