Netflix started in 1997 as a DVD rental-by-mail service. Today, we know it as a streaming giant. If they had launched streaming in 1997, it wouldn’t have worked. If they had never started at all, there’s a good chance they never would have become what they are today. Streaming wasn’t just a good idea; it was an idea waiting for the right conditions. Broadband speeds, changing consumer habits, smartphones, and a lot more had to come together before it could take off. Without those things...