Netflix (NFLX -0.75%) crushed Wall Street estimates in the fourth quarter, adding 13.1 million net new subscribers. This was the company's best fourth quarter ever. Revenue was up 12.5% year over year. While investors continue driving up the price of this top streaming stock, which is up 55% in the last 12 months, it's best not to forget about some of management's strategic shifts in recent years. Let's take a closer look at Netflix's business today and follow up with an important takeaway for investors.Cha ...