Removing accessibility barriers increasing your income

Let me quote from Click-Away Pound Survey 2016 – Final Report:

Most businesses will be unaware that they are losing income because more than 90% of customers who have difficulty using a site will not contact them. Unless businesses actively develop an understanding of accessibility, many will be unaware that the barriers even exist. Yet it is within the control of website owners to take down the barriers which are actively discouraging disabled and older customers.