From Apple CEO Tim Cook’s Q2 earnings report, we find out that the company has circa 1 billion credit cards on file:
“iTunes software and services revenue continue to grow at a double-digit rate, thanks to an incredible ecosystem and our very large, loyal and engaged customer base. With its strong momentum in growing profitability, iTunes is a very important driver of our business not only here in the United States, but around the world. We now have an almost 800 million iTunes accounts, most of these with credit cards. This is a staggering number.”
Cook’s numbers tell us that with ecommerce, customer loyalty is absolutely crucial to growing the customer base.