In my experience business owners are very open to cold email introductions. Somewhere it became legend that nobody responds to sales emails but if you rethink your pitch as an earnest attempt to either listen to their problems or provide them a solution, they will respond. Just write as a person in an honest tone about the solution and ask for a few minutes to discuss on the phone or in person. Send ten of these personally written letters and I can almost guarantee that you will get at least 3-4 meetings. From those you will learn more than any salesperson could teach you in two years.