“You can become the best and the most knowledgeable in that niche category, and you can run with it,” said Boyce, author of The Amazon Jungle: The Seller’s Survival Guide for Thriving on the World’s Most Perilous E-Commerce Marketplace. “And when you step on a landmine, not if. If you know how to put the pieces back together, after that happens, you can survive on Amazon. It is a very, very narrow path that’s getting narrower by the day.”