True, but also "Do Things that Don't Scale" (https://www.paulgraham.com/ds.html https://www.paulgraham.com/ds.html). There are many examples of successful compa

True, but also "Do Things that Don't Scale" (https://www.paulgraham.com/ds.html https://www.paulgraham.com/ds.html). There are many examples of successful companies that had customers before they had products.