How Do I Create an Unfair Competitive Advantage?

In two thousand 17, when i was working for a medical device company, i could target every single one of our buyers. It literally was an unfair competitive advantage, because i would put out information and a hundred buyers would comment back. And it is a unfair competitive advantage through the scale. But at the moment, like that's all i've focused on as a marketer. And im not even sure i call it market any more. I wiltrlly call it strategy and go to market. How do i create an unfaircompetitive advantage for my business?