Most of the top Substack writers have bigger audiences than the most popular writers at the largest mainstream outlets.
T. Boone Pickens famously quipped "The first million is the hardest." When you're starting a newsletter, getting from zero to your first 100 subscribers can seem like a big hill to climb. A few tactics:
Four years ago, it was far from accepted that people would pay for newsletters en masse. Today, we can announce that there are more than 1 million paid subscriptions to publications on Substack.