1 business thing: The next five years of Amazon

For two decades, Amazon has grown like wildfire, eschewing profit, pouring all its revenue back into itself, and leaving a wake of destruction in retail. Now it's going in for the kill.

Amazon has launched more than 100 private-label products, by market research firm Gartner L2's count. “That’s going to be a major part of what we think of as the future of retail," says Donald Ngwe, a professor of business administration at Harvard Business School.

• The massive amounts of data Amazon has on its consumers give it unparalleled insights into what shoppers really want, says James Thomson, a former Amazon executive who now advises brands that sell on the platform.
• By selling more of its own products, Amazon is competing against the sellers on its own marketplace — and starting to catch the attention of regulators and anti-trust lawyers.

Physical stores: At the beginning of 2018, Amazon made waves with its announcement of "Go" — a cashierless convenience store. By the end of the year, it had opened six of them across the country, with plans for as many as 3,000 more by 2021.

• Add those to Amazon's bookstores — 18 and counting — and "4-star" stores, where it sells goods that earned over 4 stars on its site.
• Tack on the more than 450 Whole Foods stores that Amazon also owns plus its reported plans to open even more of them.
• All told the e-commerce giant is well on its way to establishing a brick-and-mortar presence in every major city in the country.

Special report: The future of retail